Bees, Butterflies and Wildlife: Research on Electromagnetic Fields and the Environment
Electromagnetic fields from powerlines, cell phones, cell towers and wireless impacts the birds, bees, wildlife and our environment. Below is just a small example of the critical research that has been done on this issue.
“The electromagnetic radiation standards used by the Federal Communications Commission (FCC) continue to be based on thermal heating, a criterion now nearly 30 years out of date and inapplicable today.”
-The Department of Interior in a 2014 letter on the impact of cell towers on migratory birds.
Balmori, Alfonso. “Anthropogenic radiofrequency electromagnetic fields as an emerging threat to wildlife orientation.” Science of The Total Environment, vol. 518–519, 2015, pp. 58–60
- The growth of wireless telecommunication technologies causes increased electrosmog. Radio frequency fields in the MHz range disrupt insect and bird orientation.
- Radio frequency noise interferes with the primary process of magnetoreception. Existing guidelines do not adequately protect wildlife. Further research in this area is urgent.
Cucurachi, C., et al. “A review of the ecological effects of radiofrequency electromagnetic fields (RF-EMF).” Environment International, vol. 51, 2013, pp. 116–40.
- A Review of 113 studies from original peer-reviewed publications. RF-EMF had a significant effect on birds, insects, other vertebrates, other organisms and plants in 70% of the studies. Development and reproduction of birds and insects are the most strongly affected endpoints.
Balmori, A. “Electrosmog and species conservation.” Science of the Total Environment, vol. 496, 2014, pp. 314-6.
- “Conclusion: At the present time, there are reasonable grounds for believing that microwave radiation constitutes an environmental and health hazard….Concerning the exposure to electromagnetic fields, the precautionary principle is needed and should be applied to protect species from environmental non-thermal effects (Zinelis, 2010). Controls must be introduced and technology rendered safe to the environment, since this new ubiquitous and invisible pollutant could deplete the efforts devoted to species conservation.”
Manville, Albert M. “A BRIEFING MEMORANDUM: What We Know, Can Infer, and Don’t Yet Know about Impacts from Thermal and Non-thermal Non-ionizing Radiation to Birds and Other Wildlife.” Wildlife and Habitat Conservation Solutions, 2014.
- “In summary, we need to better understand … how to address these growing and poorly understood radiation impacts to migratory birds, bees, bats, and myriad other wildlife. At present, given industry and agency intransigence … massive amounts of money being spent to prevent addressing impacts from non-thermal radiation — not unlike the battles over tobacco and smoking — and a lack of significant, dedicated and reliable funding to advance independent field studies, … we are left with few options. Currently, other than to proceed using the precautionary approach and keep emissions as low as reasonably achievable, we are at loggerheads in advancing meaningful guidelines, policies and regulations that address non-thermal effects….”
Bees and Butterflies
“Cryptochromes are very badly affected by weak oscillating electromagnetic fields that are orders of magnitude weaker than the Earth’s steady magnetic field. This can disrupt both solar and magnetic navigation, which can account for colony collapse disorder in bees.”
—Dr. Andrew Goldsworthy
Research clearly shows that Bees and Butterflies are sensitive to electromagnetic fields.
Goldsworthy, Andrew. “The Birds, the Bees and Electromagnetic Pollution: How electromagnetic fields can disrupt both solar and magnetic bee navigation and reduce immunity to disease all in one go.” 2009.
- Many of our birds are disappearing mysteriously from the urban environment and our bees are now under serious threat. There is increasing evidence that at least some of this is due to electromagnetic pollution such as that from cell towers, cell phones, DECT cordless phones and Wifi. It appears capable of interfering with their navigation systems and also their circadian rhythms, which in turn reduces their resistance to disease. The most probable reason is that these animals use a group of magnetically-sensitive substances called cryptochromes for magnetic and solar navigation and also to control the activity of their immune systems.
Guerra, Patrick A., Robert J. Gegear, and Steven M. Reppert. “A magnetic compass aids monarch butterfly migration.” Nature Communications, vol. 5, no. 4164, 2014.
- “Here we use flight simulator studies to show that migrants indeed possess an inclination magnetic compass to help direct their flight equator ward in the fall. Another vulnerability to now consider is the potential disruption of the magnetic compass in monarchs by human-induced electromagnetic noise, which can apparently disrupt geomagnetic orientation in a migratory bird.”
Kumar, Neelima R., Sonika Sangwan, and Pooja Badotra. “Exposure to cell phone radiations produces biochemical changes in worker honey bees.” Toxicol Int., 18, no. 1, 2011, pp. 70–2.
- The present study was carried out to find the effect of cell phone radiations on various biomolecules in the adult workers of Apis mellifera L. The results of the treated adults were analyzed and compared with the control. Radiation from the cell phone influences honey bees’ behavior and physiology. There was reduced motor activity of the worker bees on the comb initially, followed by en masse migration and movement toward “talk mode” cell phone. The initial quiet period was characterized by rise in concentration of biomolecules including proteins, carbohydrates and lipids, perhaps due to stimulation of body mechanism to fight the stressful condition created by the radiations. At later stages of exposure, there was a slight decline in the concentration of biomolecules probably because the body had adapted to the stimulus.
Favre, Daniel. “Mobile phone induced honeybee worker piping.” Apidologie, vol. 42, 2011, pp. 270-9.
- Electromagnetic waves originating from mobile phones had a dramatic impact on the behavior of the bees, namely by inducing the worker piping signal. In natural conditions, worker piping either announces the swarming process of the bee colony or is a signal of a disturbed bee colony.
Warnke, Ulrich. “Birds, Bees and Mankind: Destroying Nature by ‘Electrosmog’.” Competence Initiative for the Protection of Humanity, Environment and Democracy, Brochure 1, 2009.
- Bees pollinate approximately 1/3 of all crops and they are disappearing by the millions. Warnke raises the concern that the dense, energetic mesh of electromagnetic fields from wireless technologies may be the cause.
Sharma, V.P. and N.K. Kumar. “Changes in honeybee behaviour and biology under the influence of cellphone radiations.” Current Science, vol. 98, no 10, 2010, pp. 1376-8.
- We have compared the performance of honeybees in cell phone radiation exposed and unexposed colonies. A significant (p < 0.05) decline in colony strength and in the egg laying rate of the queen was observed. The behaviour of exposed foragers was negatively influenced by the exposure, there was neither honey nor pollen in the colony at the end of the experiment.”
“Briefing Paper on the Need for Research into the Cumulative Impacts of Communication Towers on Migratory Birds and Other Wildlife in the United States.” Division of Migratory Bird Management (DMBM), U.S. Fish & Wildlife Service, 2009.
- Of concern to DMBM are the potential impacts of radiation on bird populations.For example, preliminary research on wild birds at cellular phone tower sites in Spain showed strong negative correlations between levels of tower-emitted microwave radiation and bird breeding, nesting, and roosting in the vicinity of the electromagnetic fields.
Harst, Wolfgang Harst, Jochen Kuhn and Hermann Stever. “Can Electromagnetic Exposure Cause a Change in Behaviour? Studying Possible Non-thermal Influences on Honey Bees – An Approach Within the Framework of Educational Informatics.” Acta Systemica-IIAS International Journal, vol 6, no. 1, 2006, pp. 1-6.
- A pilot study on honeybees testing the effects of non-thermal, high frequency electromagnetic radiation on beehive weight and flight return behavior. In exposed hives, bees constructed 21% fewer cells in the hive frames after 9 days than those unexposed.
Sainudeen, Sahib.S. “Electromagnetic Radiation (EMR) Clashes with Honey Bees.” International Journal of Environmental Sciences, vol. 1, no. 5, 2011.
- Recently a sharp decline in population of honey bees has been observed in Kerala. Although the bees are susceptible to diseases and attacked by natural enemies like wasps, ants and wax moth, constant vigilance on the part of the bee keepers can over come these adverse conditions. The present plunge in population (< 0.01) was not due to these reasons. It was caused by man due to unscientific proliferation of towers and mobile phones.”
- Six colonies of honeybees ( Apis mellifera ) were selected. Three colonies were selected as test colonies (T1,T2&T3) and the rest were as control (C1,C2&C3). The test colonies were provided with mobile phones in working conditions with frequency of 900 MHz for 10 minutes for a short period of ten days. After ten days the worker bees never returned hives in the test colonies. The massive amount of radiation produced by mobile phones and towers is actually frying the navigational skills of the honey bees and preventing them from returning back to their hives.
- The study concludes, “More must also be done to compensate individuals and communities put at risk. Insurance covering diseases related to towers, such as cancer, should be provided for free to people living in 1 km radius around the tower. Independent monitoring of radiation levels and overall health of the community and nature surrounding towers is necessary to identify hazards early. Communities need to be given the opportunity to reject cell towers and national governments need to consider ways of growing their cellular networks without constantly exposing people to radiation.”
“The potential dangers of electromagnetic fields and their effect on the environment.” Council of Europe Parliamentary Assembly, resolution 1815, 2011.
- The potential health effects of the very low frequency of electromagnetic fields surrounding power lines and electrical devices are the subject of ongoing research and a significant amount of public debate. While electrical and electromagnetic fields in certain frequency bands have fully beneficial effects which are applied in medicine, other non-ionising frequencies, be they sourced from extremely low frequencies, power lines or certain high frequency waves used in the fields of radar, telecommunications and mobile telephony, appear to have more or less potentially harmful, non-thermal, biological effects on plants, insects and animals, as well as the human body when exposed to levels that are below the official threshold values. One must respect the precautionary principle and revise the current threshold values; waiting for high levels of scientific and clinical proof can lead to very high health and economic costs, as was the case in the past with asbestos, leaded petrol and tobacco
- As regards standards or threshold values for emissions of electromagnetic fields of all types and frequencies, the Assembly strongly recommends that the ALARA (as low as reasonably achievable) principle is applied, covering both the so-called thermal effects and the athermic or biological effects of electromagnetic emissions or radiation. Moreover, the precautionary principle should be applied when scientific evaluation does not allow the risk to be determined with sufficient certainty.
Kimmel, Stefan, et al. “Electromagnetic radiation: influences on honeybees (Apis mellifera).” IIAS-InterSymp Conference, 2007.
- 39.7% of the non-irradiated bees had returned to their hives while only 7.3% of the irradiated bees had.
Clarke, Dominic, et al. “Detection and Learning of Floral Electric Fields by Bumblebees.” Science, vol. 340, no. 6128, 2013, pp. 66-9. 5
- “We report a formerly unappreciated sensory modality in bumblebees (Bombus terrestris), detection of floral electric fields. Because floral electric fields can change within seconds, this sensory modality may facilitate rapid and dynamic communication between flowers and their pollinators.”
Gegear, Robert J. et al. “Animal Cryptochromes Mediate Magnetoreception by an Unconventional Photochemical Mechanism.” Nature, vol. 463, no. 7282, 2010, pp. 804.
- “A team of neurobiologists that has investigated the mysteries of monarch migration for many years now reports that photoreceptor proteins found in monarch butterflies are linked to animal navigation. Their research finds that two types of photoreceptor proteins not only allow the butterflies to see UV light (light that is less than 420nm long, and thus, is invisible to humans), but also allows them to sense the Earth’s geomagnetic field. These photoreceptor proteins are known as cryptochromes.”
Oschman, James and Nora Oschman. “Electromagnetic communication and olfaction in insects.” Frontier Perspectives, 2004.
“Report on Possible Impacts of Communication Towers on Wildlife Including Birds and Bees.” Ministry of Environment and Forest, Government of India, 2010.
- This report details the on impacts of communication towers on wildlife including birds and bees submitted to MoEF. It warns of harmful radiation and recommends special laws to protect urban flora & fauna from threats radiation emerging from mobile towers.
Sivani, S., and D. Sudarsanam. “Impacts of radio-frequency electromagnetic field (RF-EMF) from cell phone towers and wireless devices on biosystem and ecosystem – A Review.” Biology and Medicine, vol. 4, no. 4, 2012, pp. 202–16.
- There is an urgent need for further research and “of the 919 research papers collected on birds, bees, plants, other animals, and humans, 593 showed impacts, 180 showed no impacts, and 196 were inconclusive studies”.
- “One can take the precautionary principle approach and reduce RF-EMF radiation effects of cell phone towers by relocating towers away from densely populated areas, increasing height of towers or changing the direction of the antenna.”
Malkemper, E.P., et al. “Magnetoreception in the wood mouse (Apodemus sylvaticus): influence of weak frequency-modulated radio frequency fields.” Scientific Reports, vol. 4, no. 9917, 2015.
- Wood mice exposed to a 0.9 to 5 MHz frequency sweep changed their preference from north-south to east-west. In contrast to birds, however, a constant frequency field tuned to the Larmor frequency (1.33 MHz) had no effect on mouse orientation. In sum, we demonstrated magnetoreception in wood mice and provide first evidence for a radical-pair mechanism in a mammal.Open Access Paper: http://bit.ly/1zh1J91
- In sum, we show that wood mice possess a magnetic sense that they use to position their nests along the NNE-SSW axis relative to the magnetic field. The NNE-SSW preference was not altered by RF fields delivered at the Larmor frequency, but was shifted by approximately 90° by a RF frequency sweep (0.9–5 MHz repeated at 1 kHz) at an intensity of only ~5% that of the Larmor frequency stimulus.
- The results point to the involvement of a radical pair mechanism, the first such evidence for a mammal, although further research is needed to provide a more thorough characterization of the underlying mechanism.
- The RF magnetic fields applied here have peak intensities below the ICNIRP guidelines for general public exposure (63, i.e., Brms = 0.92 µT/f [MHz], or Bpeak = 1.30 µT/f [MHz]) considered as harmless for human health. Yet, we show that they are sufficient to affect behaviour in a mammal.
Schwarze, S.,, et al. “Weak Broadband Electromagnetic Fields are More Disruptive to Magnetic Compass Orientation in a Night-Migratory Songbird (Erithacus rubecula) than Strong Narrow-Band Fields.” Front Behav Neurosci., vol. 10, no. 55, 2016.
- Magnetic compass orientation in night-migratory songbirds is embedded in the visual system and seems to be based on a light-dependent radical pair mechanism. Recent findings suggest that both broadband electromagnetic fields ranging from ~2 kHz to ~9 MHz and narrow-band fields at the so-called Larmor frequency for a free electron in the Earth’s magnetic field can disrupt this mechanism. However, due to local magnetic fields generated by nuclear spins, effects specific to the Larmor frequency are difficult to understand considering that the primary sensory molecule should be organic and probably a protein. We therefore constructed a purpose-built laboratory and tested the orientation capabilities of European robins in an electromagnetically silent environment, under the specific influence of four different oscillating narrow-band electromagnetic fields, at the Larmor frequency, double the Larmor frequency, 1.315 MHz or 50 Hz, and in the presence of broadband electromagnetic noise covering the range from ~2 kHz to ~9 MHz. Our results indicated that the magnetic compass orientation of European robins could not be disrupted by any of the relatively strong narrow-band electromagnetic fields employed here, but that the weak broadband field very efficiently disrupted their orientation.
Engels, S. et al. “Anthropogenic electromagnetic noise disrupts magnetic compass orientation in a migratory bird.” Nature, vol. 509, 2014, pp. 353–6.
- Scientists found that migrating robins became disorientated when exposed to electromagnetic fields at levels far lower than the safety threshold for humans. “Here we show that migratory birds are unable to use their magnetic compass in the presence of urban electromagnetic noise…These fully double-blinded tests document a reproducible effect of anthropogenic electromagnetic noise on the behavior of an intact vertebrate.”
Balmori A. “Possible Effects of Electromagnetic Fields from Phone Masts on a Population of White Stork (Ciconia ciconia).” Electromagn Biol Med, vol. 24, no. 2, 2005, pp. 109-19.
- Interesting behavioral observations of the white stork nesting sites located within 100m of one or several cell site antennas were carried out. These results are compatible with the possibility that microwaves are interfering with the reproduction of white storks and would corroborate the results of laboratory research by other authors In far away areas, where the radiation decreases progressively, the chronic exposure can also have long term effects. Effects from antennas on the habitat of birds are difficult to quantify, but they can cause a serious deterioration, generating silent areas without male singers or reproductive couples.
Kavokin, K., et al. “Magnetic orientation of garden warblers (Sylvia borin) under 1.4 MHz radiofrequency magnetic field.” Journal of the Royal Society, Interface, vol. 11, no. 97, 2014.
- “Birds in experimental cages, deprived of visual information, showed the seasonally appropriate direction of intended flight with respect to the magnetic meridian. Weak radiofrequency (RF) magnetic field (190 nT at 1.4 MHz) disrupted this orientation ability.”
- “These results may be considered as an independent replication of earlier experiments, performed by the group of R. and W. Wiltschko with European robins (Erithacus rubecula). Confirmed outstanding sensitivity of the birds’ magnetic compass to RF fields in the lower megahertz range demands for a revision of one of the mainstream theories of magnetoreception, the radical-pair model of birds’ magnetic compass.”
- “As discussed above, the high sensitivity of the birds’ magnetic compass to RF fields, found in [21,22,24] and now confirmed by us, is difficult to explain within the existing radical-pair theory ….”
Cammaerts, M.C. and Johansson, O. “Ants can be used as bio-indicators to reveal biological effects of electromagnetic waves from some wireless apparatus.” Electromagnetic Biology and Medicine, vol. 33, no. 4, 2014, pp. 282-8.
- “the linear and angular speed of ants are immediately altered by the presence of EMF/RF fields. Based on these results, the authors advise users to deactivate the WiFi function of their PC/laptop.”
Margaritis, L.H., et al. “Drosophila oogenesis as a biomarker responding to EMF sources.” Electromagnetic Biology and Medicine, vol. 33, no. 3, 2014, pp. 165-89.
- A total of 280 different experiments were performed. Exposure to wireless devices such as WiFi, baby monitors, and phones created statistically significant effects regarding reproduction and cell death apoptosis induction, even at very low intensity levels (0.3 V/m bluetooth radiation), well below ICNIRP’s guidelines.
Balmori, A. “Mobile phone mast effects on common frog (Rana temporaria) tadpoles.” Electromagnetic Biology and Medicine, vol. 29, no. 1-2, 2010, pp. 31-5.
- Eggs and tadpoles of the common frog were exposed to electromagnetic radiation from cell phone antennas for two months, from the egg phase until an advanced phase of tadpole prior to metamorphosis. Results indicate that radiation emitted by phone masts in a real situation may affect the frogs development and may cause an increase in mortality of exposed tadpoles. “This research may have huge implications for the natural world, which is now exposed to high microwave radiation levels from a multitude of phone masts.”
Baker, R.R., J.G. Mather and J.H. Kennaugh. “Magnetic bones in human sinuses.” Nature, vol. 301, no. 5895, 1983, pp. 79-80.
- Evidence continues to accumulate that a wide range of organisms, from bacteria to vertebrates, can detect and orient to ambient magnetic fields (for examples see refs 2-4). Since the discovery that magnetic orientation by bacteria was due to the presence within the organism of magnetic particles of the ferric/ferrous oxide, magnetite, the search has begun for other biogenic deposits of inorganic magnetic material and ways in which the possession of such material might confer on the organism the ability to orient to ambient magnetic fields. Such magnetic material, often identified as magnetite, has been discovered in bees, homing pigeons, dolphins and various other organisms, including man. A variety of hypotheses for the use of magnetite in magnetic field detection have been proposed. We report here that bones from the region of the sphenoid/ethmoid sinus complex of humans are magnetic and contain deposits of ferric iron. The possible derivations and functions of these deposits are discussed.
Plants and Trees
Halgamuge, M.N. “Weak radiofrequency radiation exposure from mobile phone radiation on plants.” Electromagnetic Biology and Medicine, vol. 36, no. 2, 2017, pp. 213-235.
- “Our analysis demonstrates that the data from a substantial amount of the studies on RF-EMFs from mobile phones show physiological and/or morphological effects (89.9%, p < 0.001). Additionally, our analysis of the results from these reported studies demonstrates that the maize, roselle, pea, fenugreek, duckweeds, tomato, onions and mungbean plants seem to be very sensitive to RF-EMFs. Our findings also suggest that plants seem to be more responsive to certain frequencies…”
Waldmann-Selsam, C., et al. “Radiofrequency radiation injures trees around mobile phone base stations.” Science of the Total Environment, vol. 572, 2016, pp. 554-69.
Ernst D.A. and K.J. Lohmann. “Effect of magnetic pulses on Caribbean spiny lobsters: implications for magnetoreception.”. Journal of Experimental Biology, vol. 219, pt. 12, pp. 1827-32. 2016
- The Caribbean spiny lobster,Panulirus argus, is a migratory crustacean that uses Earth’s magnetic field as a navigational cue, but how lobsters detect magnetic fields is not known. Magnetic material thought to be magnetite has previously been detected in spiny lobsters, but its role in magnetoreception, if any, remains unclear. As a first step toward investigating whether lobsters might have magnetite-based magnetoreceptors, we subjected lobsters to strong, pulsed magnetic fields capable of reversing the magnetic dipole moment of biogenic magnetite crystals. Lobsters were subjected to a single pulse directed from posterior to anterior and either: (1) parallel to the horizontal component of the geomagnetic field (i.e., toward magnetic north); or (2) antiparallel to the horizontal field (i.e., toward magnetic south). An additional control group was handled but not subjected to a magnetic pulse. After treatment, each lobster was tethered in a water-filled arena located within 200 m of the capture location and allowed to walk in any direction. Control lobsters walked in seemingly random directions and were not significantly oriented as a group. In contrast, the two groups exposed to pulsed fields were significantly oriented in approximately opposite directions. Lobsters subjected to a magnetic pulse applied parallel to the geomagnetic horizontal component walked westward; those subjected to a pulse directed antiparallel to the geomagnetic horizontal component oriented approximately northeast. The finding that a magnetic pulse alters subsequent orientation behavior is consistent with the hypothesis that magnetoreception in spiny lobsters is based at least partly on magnetite-based magnetoreceptors.
Gustavino, B., et al. “Exposure to 915 MHz radiation induces micronuclei in Vicia faba root tips.” Mutagenesis, vol. 31, no. 2, 2016, pp. 187-92.
- The increasing use of mobile phones and wireless networks raised a great debate about the real carcinogenic potential of radiofrequency-electromagnetic field (RF-EMF) exposure associated with these devices. Conflicting results are reported by the great majority of in vivo and in vitro studies on the capability of RF-EMF exposure to induce DNA damage and mutations in mammalian systems. Aimed at understanding whether less ambiguous responses to RF-EMF exposure might be evidenced in plant systems with respect to mammalian ones, in the present work the mutagenic effect of RF-EMF has been studied through the micronucleus (MN) test in secondary roots of Vicia faba seedlings exposed to mobile phone transmission in controlled conditions, inside a transverse electro magnetic (TEM) cell.
- Exposure of roots was carried out for 72h using a continuous wave (CW) of 915 MHz radiation at three values of equivalent plane wave power densities (23, 35 and 46W/m2). The specific absorption rate (SAR) was measured with a calorimetric method and the corresponding values were found to fall in the range of 0.4-1.5W/kg.
- Results of three independent experiments show the induction of a significant increase of MN frequency after exposure, ranging from a 2.3-fold increase above the sham value, at the lowest SAR level, up to a 7-fold increase at the highest SAR. These findings are in agreement with the limited number of data on cytogenetic effects detected in other plant systems exposed to mobile phone RF-EMF frequencies and clearly show the capability of radiofrequency exposure to induce DNA damage in this eukaryotic cell system.
- It is worth noticing that this range of SAR values is well below the international limits for localised exposure (head, trunk), according to the ICNIRP guidelines (35) and IEEE std C95.1 (38), which are 10 (8.0) W/kg for occupational exposure and 2.0 (1.6) W/kg for general public exposure respectively.
Halgamuge, Malka N., See Kye Yak and Jacob L. Eberhardt. “Reduced growth of soybean seedlings after exposure to weak microwave radiation from GSM 900 mobile phone and base station.” Bioelectromagnetics, vol. 36, no. 2, 2015, pp. 87-95.
- The aim of this work was to study possible effects of environmental radiation pollution on plants. The association between cellular telephone (short duration, higher amplitude) and base station (long duration, very low amplitude) radiation exposure and the growth rate of soybean (Glycine max) seedlings was investigated.
- The exposure to higher amplitude (41 V m−1) GSM radiation resulted in diminished outgrowth of the epicotyl. The exposure to lower amplitude (5.7 V m−1) GSM radiation did not influence outgrowth of epicotyl, hypocotyls, or roots. The exposure to higher amplitude CW radiation resulted in reduced outgrowth of the roots whereas lower CW exposure resulted in a reduced outgrowth of the hypocotyl. Soybean seedlings were also exposed for 5 days to an extremely low level of radiation (GSM 900 MHz, 0.56 V m−1) and outgrowth was studied 2 days later. Growth of epicotyl and hypocotyl was found to be reduced, whereas the outgrowth of roots was stimulated.
- Our findings indicate that the observed effects were significantly dependent on field strength as well as amplitude modulation of the applied field.
Senavirathna, M.D., et al. “Nanometer-scale elongation rate fluctuations in the Myriophyllum aquaticum (Parrot feather) stem were altered by radio-frequency electromagnetic radiation.” Plant Signal Behav, vol. 9, no. 3, 2014.
- Statistically significant changes to this plant from a non thermal effect.
Soran, M.L., et al. “Influence of microwave frequency electromagnetic radiation on terpene emission and content in aromatic plants.” Journal of Plant Physiology, vol. 171, no. 15, 2014, pp. 1436-43.
- Microwave irradiation resulted in thinner cell walls, smaller chloroplasts and mitochondria, and enhanced emissions of volatile compounds, in particular, monoterpenes and green leaf volatiles (GLV). These data collectively demonstrate that human-generated microwave pollution can potentially constitute a stress to the plants.
- The above is only a small sampling of the research showing biological effects at non thermal levels on living organisms.
Fedrowitz, Maren. “Cows: A big model for EMF research, somewhere between Vet-Journals and “Nature”.” The Bioelectromagnetics Society, 2014.
- Effects of electromagnetic fields (EMF) on cows have been frequently discussed in public media as well as in specialist journals and meetings with agricultural, veterinary or dairy backgrounds. Indeed, in view of the available literature, it does seem that cows show EMF susceptibilities and respond to environmental exposures of a broad range of frequencies and properties:
- Cows are sensitive to the Earth´s magnetic field. Bovine magnetoreception can be influenced by external EMF, e.g. powerlines.
- Several physiological alterations in dairy cows exposed to extremely low frequency (ELF) EMF were reported without major indications for adverse health effects. Notably, the observed effects seem to be dependent on the magnetic field component or on combined electric and magnetic fields rather than on electric field exposure alone.
- Cows are sensitive to earth currents (stray voltage) associated with transients in particular harmonics. Milk production, health, and behavior seem to be negatively affected.
- Bovine responses to radiofrequency (RF) exposure include avoidance behavior, reduced ruminating time, and alterations in oxidative stress. These findings indicate possible adverse health effects. However, most of the studies have critical points (one-herd-case report, logistic problems in study design, lack of appropriate exposure assessment) that confirmation of the observed RF effects is clearly needed, though studies in such big animals are time-, place-, and money-consuming, and exposure assessment and dosimetry are challenging issues.
- Overall, cattle seem to be affected by environmental EMF exposure. Cows align to geomagnetic field lines and are influenced by ELF EMF
Li, Ying, et al. “Extremely Low-Frequency Magnetic Fields Induce Developmental Toxicity and Apoptosis in Zebrafish (Danio rerio) Embryos.” Biological Trace Element Research, vol. 162, no. 1, 2014, pp. 324-32.
- In conclusion, the overall results demonstrated that ELF-MF exposure has detrimental effects on the embryonic development of zebrafish by affecting the hatching, decreasing the heart rate, and inducing apoptosis, although such effects were not mortal threat. The results also indicate that zebrafish embryos can serve as a reliable model to investigate the biological effect of ELF-MF.
Harkless, Ryan, Muntather Al-Quraishi and Mary C. Vagula. “Radiation hazards of radio frequency waves on the early embryonic development of Zebrafish.” SPIE Proceedings, vol. 9112, 2014.
- With the growing use of wireless devices in almost all day-to-day activities, exposure to radio-frequency radiation has become an immediate health concern. It is imperative that the effects of such radiation not only on humans, but also on other organisms be well understood. In particular, it is critical to understand if RF radiation has any bearing on the gene expression during embryonic development, as this is a crucial and delicate phase for any organism. Owing to possible effects that RF radiation may have on gene expression, it is essential to explore the carcinogenic or teratogenic properties that it may show. This study observed the effects of RF radiation emitted from a cellular telephone on the embryonic development of zebrafish.
- This study observed the effects of RF radiation emitted from a cellular telephone on the embryonic development of zebra fish. The expression of the gene shha plays a key role in the early development of the fish. This gene has homologs in humans as well as in other model organisms. Additionally, several biomarkers indicative of cell stress were examined: including lactate dehydrogenase (LDH), superoxide dismutase (SOD), and lipid peroxidation (LPO).
- Results show a significant decrease in the expression of shha, a significant decrease in LDH activity. There was no significant increase in SOD and LPO activity.
Takebe, Arika, et al. “Zebrafish respond to the geomagnetic field by bimodal and group-dependent orientation.”, Scientific Reports, vol 2, no. 727, 2012.
- In this study, we found that zebrafish, a model organism suitable for genetic manipulation, responded to a magnetic field as weak as the geomagnetic field.
Haggerty, Katie. “Adverse Influence of Radio Frequency Background on Trembling Aspen Seedlings.” International Journal of Forestry Research, vol 2010, no. 836278, 2010.
- “This study suggests that the RF background may have strong adverse effects on growth rate and fall anthocyanin production in aspen, and may be an underlying factor in aspen decline.”
Magneto-reception in cows and other mammals:
Slaby, P., K. Tomanova and M. Vacha. “Cattle on pastures do align along the North-South axis, but the alignment depends on herd density.” J Comp Physiol A, vol. 199, 2013, pp. 695-701.
Hart, V., et al. “Dogs are sensitive to small variations of the Earth´s magnetic field.” Frontiers Zoology, vol. 10, no. 80, 2013.
Eder, S.H.K., et al. “Magnetic characterization of isolated candidate vertebrate magnetoreceptor cells.” PNAS, vol. 109, 2012, pp. 12022-7.
Cerveny, J., et al. “Directional preference max enhance hunting accuracy in foraging foxes.” Biol Lett, vol. 7, 2011, pp. 355-7.
Hert, J., et al. “No alignment of cattle along geomagnetic field lines found.” J Comp Physiol A, vol. 197, 2011, pp. 677-82.
Begall, S., et al. “Further support for the alignment of cattle along field lines: reply to Hert et al.” J Comp Physiol A, vol. 197, 2011, pp. 1127-33.
Cressey, D. “The mystery of the magnetic cows.” Nature News, 2011
Burda, H., et al. “Extremely low-frequency electromagnetic fields disrupt magnetic alignment of ruminants.” PNAS, vol. 106, 2009, pp. 5708-13.
Cressey, D. “Return of the B-field bovines.” Nature News Blog, 2009
Cressey, D. “Magnetic cows are visible from space.” Nature News, 2008
Begall, S., et al. “Magnetic alignment in grazing and resting cattle and deer.” PNAS, vol. 105, 2008, pp. 13451-5.
Effects of ELF electric and magnetic fields in (dairy) cows:
Stelletta, C., et al. “Effects of exposure to extremely low frequency electro-magnetic fields on circadian rhythms and distribution of some leukocyte differentiation antigens in dairy cows.” Biomed Environ Sci, vol. 20, no. 2, 2007, pp. 164-70.
Burchard, J.F., D.H. Nguyen and H.G. Monardes. “Exposure of pregnant dairy heifer to magnetic fields at 60 Hz and 30 µT.” Bioelectromagnetics, vol. 28, no. 6, 2007, pp. 471-6.
Burchard, J.F., D.H. Nguyen and M. Rodriguez. “Plasma concentrations of thyroxine in dairy cows exposed to 60 Hz electric and magnetic fields.” Bioelectromagnetics, vol. 27, 2006, pp. 553-9.
Nguyen, D.H., L. Richard and J.F. Burchard. “Exposure chamber for determining the biological effects of electric and magnetic fields on dairy cows.” Bioelectromagnetics, vol. 26, no. 2, 2005, pp. 138-44.
Rodriguez, M., et al. “Blood melatonin and prolactin concentrations in dairy cows exposed to 60 Hz electric and magnetic fields during 8 h photoperiods.” Bioelectromagnetics, 25, 2004, pp. 508-15.
Burchard, J.F., et al. “Lack of effect of 10 kV/m 60 Hz electric field exposure on pregnant heifer hormones.” Bioelectromagnetics, vol. 25, no. 4, 2004, pp. 308-12.
Burchard, J.F., H. Monardes and D.H. Nguyen. “Effects of 10 kV, 30 µT, 60 Hz electric and magnetic fields on milk production and feed intake in nonpregnant dairy cattle.” Bioelectromagnetics, vol. 24, 2003, pp. 557-63.
Rodriguez, M., et al. “Responses of the estrous cycle in dairy cows exposed to electric and magnetic fields (60 Hz) during 8-h photoperiods.” Anim Reprod Sci, vol. 77, no. 1-2, 2003, pp. 11-20.
Broucek, J., et al. “Effect of low magnetic field on calves during prenatal development.” Tierärztl Umschau, vol. 57, 2002, pp. 241-8.
Rodriguez, M., et al. “Effect of electric and magnetic fields (60 Hz) on production, and levels of growth hormone and insulin-like growth factor 1, in lactating, pregnant cows subjected to short days.” J Dairy Sci, vol. 85, 2002, pp. 2843-9.
Broucek, J., et al. “Effect of low magnetic field on dairy cows.” Tierärztl Umschau, vol. 56, 2001, pp. 364-9.
Burchard, J.F., D.H. Nguyen and E. Block. “Macro- and trace element concentrations in blood plasma and cerebrospinal fluid of dairy cows exposed to electric and magnetic fields.” Bioelectromagnetics, vol. 20, 1999, pp. 358-64.
Burchard, J.F., D.H. Nguyen, E. Block. “Effects of electric and magnetic fields on nocturnal melatonin concentrations in dairy cows.” J Dairy Sci, vol. 81, 1998, pp. 722-27.
Burchard, J.F., et al. “Effects of electromagnetic fields on the levels of biogenic amine metabolites, quinolinic acid, and beta-endorphin in the cerebrospinal fluid of dairy cows.” Neurochem Res, vol. 23, 1998, pp. 1527-31.
Burchard, J.F., D.H. Nguyen and E. Block. “Progesterone concentrations during estrous cycle of dairy cows exposed to electric and magnetic fields.” Bioelectromagnetics, vol. 19, no. 7, 1998, pp. 438-43.
Burchard, J.F., et al. “Biological effects of electric and magnetic fields on productivity of dairy cows.” J Dairy Sci, vol. 79, 1996, pp. 1549-54.
Angell, R.F., et al. “Effects of a high-voltage direct-current transmission line on beef cattle production.” Bioelectromagnetics, vol. 11, no. 4, 1990, pp. 273-82.
Algers, B. and J. Hultgren. “Effects of long-term exposure to a 400 kV, 50 Hz transmission line on estrous and fertility in cows.” Prev Vet Med, vol. 5, no. 1, 1987, pp. 21-36.
Algers, B. and K. Hennichs. “The effect of exposure to 400 kV transmission lines on the fertility of cows”. Prev Vet Med, vol. 3, 1985, pp. 351-61
Effects of stray voltage in cows:
Hillman, D., et al. “Relationship of electric power quality to milk production of dairy herds – Field study with literature review.” Sci Total Environ, vol. 447, 2013, pp. 500-14.
Erdreich, L.S., et al. “Meta-analysis of stray voltage on dairy cattle.” J Dairy Sci, vol. 92, no. 12, 2009, pp. 5951-63.
Effects of radiofrequency fields in cows:
Hässig, M., et al. “Influence of non ionizing radiation of base stations on the activity of redox proteins in bovines.” BMC Vet Res, vol. 10, no. 136, 2014.
Hässig, M., et al. “Prevalence of nuclear cataract in Swiss veal calves and its possible association with mobile telephone antenna base stations.” Schweiz Arch Tierheilkd, vol. 151, 2009, pp. 471-8.
Löscher, W. “Survey of effects of radiofrequency electromagnetic fields on production, health and behavior of farm animals.” Prakt Tierarzt, vol. 84, no. 11, 2003.
Wenzel, C., A.C. Wöhr and J. Unshelm. “The effect of electromagnetic transmitters on behaviour of dairy cows.” Prakt Tierarzt, vol. 83, 2002, pp. 260-6.
Löscher, W. and G. Käs. “Behavioral abnormalities in a dairy cow herd near a TV and radio transmitting antenna.” Prakt Tierarzt, vol. 79, 1998, pp. 437-4.
Stärk, K.D., et al. “Absence of chronic effect of exposure to short-wave radio broadcast signal on salivary melatonin concentrations in dairy cattle.” J Pineal Res, vol. 22, no. 4, 1997, pp. 171-6.