Productivity, embryo and eggshell characteristics, and contaminants in bald eagles from the Great Lakes, USA, 1986 to 2000

Best, David Albert; Elliott, Kyle H.; Shieldcastle, Mark C.; Postupalsky, Sergej; Kubiak, Timothy J.; Tillitt, Donald E.; Elliott, John E.

doi:10.1002/etc.195

Cited by 43 publications

(22 citation statements)

References 47 publications

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“…The values may be overestimated due to cumulative effects of ∑PCB, DDE other chemicals, and other stressors. However, the threshold values for ∑PCB and DDE were close to those estimated for bald eagles (Wiemeyer et al 1993; Elliott and Harris 2001; Best et al 2010). In addition, the first signs of a reduction in reproduction were revealed at a ∑PCB concentration of 1 × 10 4 μg·kg −1 wet weight in eggs (Fig.…”

Section: Discussionsupporting

confidence: 79%

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Modelling the impact of toxic and disturbance stress on white-tailed eagle (Haliaeetus albicilla) populations

et al. 2011

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Several studies have related breeding success and survival of sea eagles to toxic or non-toxic stress separately. In the present investigation, we analysed single and combined impacts of both toxic and disturbance stress on populations of white-tailed eagle (Haliaeetus albicilla), using an analytical single-species model. Chemical and eco(toxico)logical data reported from laboratory and field studies were used to parameterise and validate the model. The model was applied to assess the impact of ∑PCB, DDE and disturbance stress on the white-tailed eagle population in The Netherlands. Disturbance stress was incorporated through a 1.6% reduction in survival and a 10–50% reduction in reproduction. ∑PCB contamination from 1950 up to 1987 was found to be too high to allow the return of white-tailed eagle as a breeding species in that period. ∑PCB and population trends simulated for 2006–2050 suggest that future population growth is still reduced. Disturbance stress resulted in a reduced population development. The combination of both toxic and disturbance stress varied from a slower population development to a catastrophical reduction in population size, where the main cause was attributed to the reduction in reproduction of 50%. Application of the model was restricted by the current lack of quantitative dose–response relationships between non-toxic stress and survival and reproduction. Nevertheless, the model provides a first step towards integrating and quantifying the impacts of multiple stressors on white-tailed eagle populations.

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Section: Discussionsupporting

confidence: 79%

“…In reality, the fledging success often increases after first breeding and declines at the end of life (Best et al 2010). Large variations were found in survival and reproduction rates.…”

Section: Discussionmentioning

confidence: 99%

Modelling the impact of toxic and disturbance stress on white-tailed eagle (Haliaeetus albicilla) populations

et al. 2011

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“…In the Northeastern Pacific, transient and resident killer whales (Orcinus orca) continue to be the most PCB-contaminated organisms of the world, which raises serious concerns about their long-term survival (Alava et al, 2012;Best et al, 2010;Buckman et al, 2011;Hickie, Ross, Macdonald & Ford, 2007;Lundin et al, 2016;Ross et al, 2000). While PCBs represent only one chemical class found in killer whales, they are considered the preeminent contaminant threat to high trophic level species in the Northern Hemisphere (Elliott, Butler, Norstrom & Whitehead, 1989;Ross et al, 2000;Ylitalo et al, 2001).…”

Section: Impacts On Apex Predators In the Northeastern Pacificmentioning

confidence: 99%

Climate change–contaminant interactions in marine food webs: Toward a conceptual framework

Alava

Cheung

Ross

et al. 2017

Global Change Biology

145

110

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Climate change is reshaping the way in which contaminants move through the global environment, in large part by changing the chemistry of the oceans and affecting the physiology, health, and feeding ecology of marine biota. Climate change-associated impacts on structure and function of marine food webs, with consequent changes in contaminant transport, fate, and effects, are likely to have significant repercussions to those human populations that rely on fisheries resources for food, recreation, or culture. Published studies on climate change-contaminant interactions with a focus on food web bioaccumulation were systematically reviewed to explore how climate change and ocean acidification may impact contaminant levels in marine food webs. We propose here a conceptual framework to illustrate the impacts of climate change on contaminant accumulation in marine food webs, as well as the downstream consequences for ecosystem goods and services. The potential impacts on social and economic security for coastal communities that depend on fisheries for food are discussed. Climate change-contaminant interactions may alter the bioaccumulation of two priority contaminant classes: the fat-soluble persistent organic pollutants (POPs), such as polychlorinated biphenyls (PCBs), as well as the protein-binding methylmercury (MeHg). These interactions include phenomena deemed to be either climate change dominant (i.e., climate change leads to an increase in contaminant exposure) or contaminant dominant (i.e., contamination leads to an increase in climate change susceptibility). We illustrate the pathways of climate change-contaminant interactions using case studies in the Northeastern Pacific Ocean. The important role of ecological and food web modeling to inform decision-making in managing ecological and human health risks of chemical pollutants contamination under climate change is also highlighted. Finally, we identify the need to develop integrated policies that manage the ecological and socioeconomic risk of greenhouse gases and marine pollutants.

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“…(), and Best et al. (). This can be explained by the fact that these field studies used regression techniques that relate changes in the mean of a reproduction success variable to DDE, instead of looking at one of the upper quantiles.…”

Section: Discussionmentioning

confidence: 98%

“…With legislated restrictions on usage of DDT in the 1970s, environmental concentrations decreased substantially, leading to partial recovery of populations (Grier , Best et al. , Dykstra et al. ).…”

Section: Introductionmentioning

confidence: 99%

Using field data to quantify chemical impacts on wildlife population viability

Hilbers

Hoondert

Schipper

et al. 2018

Ecological Applications

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Abstract. Environmental pollution is an important driver of biodiversity loss. Yet, to date, the effects of chemical exposure on wildlife populations have been quantified for only a few species, mainly due to a lack of appropriate laboratory data to quantify chemical impacts on vital rates. In this study, we developed a method to quantify the effects of toxicant exposure on wildlife population persistence based on field monitoring data. We established field-based vital-rate-response functions for toxicants, using quantile regression to correct for the influences of confounding factors on the vital rates observed, and combined the response curves with population viability modelling. We then applied the method to quantify the impact of DDE on three bird species: the White-tailed Eagle, Bald Eagle, and Osprey. Population viability was expressed via five population extinction vulnerability metrics: population growth rate (r 1 ), critical patch size (CPS), minimum viable population size (MVP), probability of population extirpation (PE), and median time to population extirpation (MTE). We found that past DDE exposure concentrations increased population extirpation vulnerabilities of all three bird species. For example, at DDE concentrations of 25 mg/kg wet mass of egg (the maximum historic exposure concentration reported in literature for the Osprey), r 1 became small (White-tailed Eagle and Osprey) or close to zero (Bald Eagle), the CPS increased up to almost the size of Connecticut (White-tailed Eagle and Osprey) or West Virginia (Bald Eagle), the MVP increased up to approximately 90 (White-tailed Eagle and Osprey) or 180 breeding pairs (Bald Eagle), the PE increased up to almost certain extirpation (Bald Eagle) or only slightly elevated levels (White-tailed Eagle and Osprey) and the MTE became within decades (Bald Eagle) or remained longer than a millennium (White-tailed Eagle and Osprey). Our study provides a method to derive species-specific field-based response curves of toxicant exposure, which can be used to assess population extinction vulnerabilities and obtain critical levels of toxicant exposure based on maximum permissible effect levels. This may help conservation managers to better design appropriate habitat restoration and population recovery measures, such as reducing toxicant levels, increasing the area of suitable habitat or reintroducing individuals.

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Productivity, embryo and eggshell characteristics, and contaminants in bald eagles from the Great Lakes, USA, 1986 to 2000

Cited by 43 publications

References 47 publications

Modelling the impact of toxic and disturbance stress on white-tailed eagle (Haliaeetus albicilla) populations

Modelling the impact of toxic and disturbance stress on white-tailed eagle (Haliaeetus albicilla) populations

Climate change–contaminant interactions in marine food webs: Toward a conceptual framework

Using field data to quantify chemical impacts on wildlife population viability

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