i
Variable vital rates and the risk of population declines in Adélie penguins from the Antarctic Peninsula region
-
2017
Source: Ecosphere 8(1): e01666
[PDF-1.42 MB]
Details:
-
Journal Title:Ecosphere
-
Personal Author:
-
NOAA Program & Office:
-
Description:Predicting population responses in changing environments is an important task for ecologists. In polar regions, climate warming, loss of sea ice, and more frequent anomalous events suggest that further reductions in ice‐dependent animal populations are likely. We assess the risk of near‐term (30‐year) depletion of an Adélie penguin (Pygoscelis adeliae ) population with a stochastic matrix model parameterized with 30 yr (1982–2011) of data from the Copacabana colony on King George Island, Antarctica. The model was fitted to nest census data by estimating correction factors for survival rates estimated from a multi‐state mark–recapture model. We modeled future survival and fecundity scenarios during the projection period (2012–2041) based on a two‐state Markov chain that randomly assigned survival rates and reproductive success from their respective historical distributions to represent “good” and “poor” years. Monte Carlo simulation was used to estimate population trajectories across a range of progressively worse survival conditions. The results suggest that, given historical distributions of survival and reproductive success, a limited scope for recovery of the population is present, commensurate with recent stabilization in population size at the study site. However, our projections mainly suggest that the Adélie penguin population will decline if the frequency of years with poor survival remains at, or increases above, its 30‐year mean. The risk of local depletion within 30 yr, defined according to International Union for Conservation of Nature categories for endangered and critically endangered species, was 33% for >90% declines, but near 100% for 50% declines given status‐quo conditions. As survival conditions worsen, the risk of substantive depletions rose rapidly. Given expectations of further environmental and ecosystem changes in the northern Antarctic Peninsula region, continued declines in Adélie penguin population size at the northern extent of their range should be expected.
-
Keywords:
-
Source:Ecosphere 8(1): e01666
-
Document Type:
-
Rights Information:CC BY
-
Compliance:Submitted
-
Main Document Checksum:urn:sha256:ef615c4b71a68656ba1f59ca8a679ea44c5be6f336869200dee8f01c5d8dc93f
-
File Type:
Supporting Files
-
No Additional Files
More +
Related Documents
-
2018 | Annals of Glaciology, 59(76pt2), 137-147.Description:Pressure ridges impact the mass, energy and momentum budgets of the sea-ice cover and present an obstacle to transportation through ice-infested water...Personal Author:Drake, John M. ;Richards, Robert L.2018 | Ecosphere 9(9): e02373Description:Methods for modeling species’ distributions in nature are typically evaluated empirically with respect to data from observations of species occurren...2019 | Proc Natl Acad Sci U S A. 2019 Mar 19; 116(12): 5582–5587Description:In terrestrial systems, the green wave hypothesis posits that migrating animals can enhance foraging opportunities by tracking phenological variation ...Personal Author:Lefohn, Allen S. ;Malley, Christopher S....2018 | Elem Sci Anth, 6(1), p.28.Description:Assessment of spatial and temporal variation in the impacts of ozone on human health, vegetation, and climate requires appropriate metrics. A key comp...2019 | Conserv Physiol. 2019; 7(1): coz035.Description:Reversing global declines in the abundance and diversity of fishes is dependent on science-based conservation solutions. A wealth of data exist on the...Using Linkage Maps as a Tool To Determine Patterns of Chromosome Synteny in the Genus SalvelinusCitePersonal Author:Hale, Matthew C ;McKinney, Garrett J...2017 | G3 (Bethesda) 2017 Nov; 7(11): 3821-3830.Description:Next generation sequencing techniques have revolutionized the collection of genome and transcriptome data from nonmodel organisms. This manuscript det...Personal Author:Yang, Tiffany ;Haas, Heather L...2019 | Conserv Physiol;Description:We documented blood biochemistry and haematology of healthy loggerhead turtles (Caretta caretta) in the Northwest (NW) Atlantic in order to establish ...Personal Author:Trego, Marisa L ;Whitehead, Andrew...2019 | Conserv Physiol;Description:Marine wildlife populations are adapted to survive in highly dynamic environments. However, identifying the effects of endogenous versus exogenous var...Personal Author:Rojas-Bracho, Lorenzo ;Brusca, Richard C...2019 | Bioscience;Description:The vaquita porpoise (Phocoena sinus) is Mexico's only endemic—and the world's most endangered—marine mammal. With a population of fewer than 30 i...Personal Author:Friedman, Whitney R. ;Martin, Benjamin T....2019 | Ecosphere 10(7): e02743Description:Life histories of migratory species such as anadromous fishes make them particularly susceptible to composite effects of processes experienced across ...2017 | Ecosphere 8(3): e01728Description:River‐floodplains are hotspots for many ecosystem services (ES ), and thus, understanding how these services are spatially organized along river sys...Seasonal physiological dynamics of maturing female southern flounder (Paralichthys lethostigma)CitePersonal Author:Grieshaber, Casey A. ;Midway, Stephen R....2016 | Conserv Physiol. 2016; 4(1): cow043.Description:Physiological information is rarely used in descriptions of maturity for managed, wild fish species; however, the use of physiological data holds grea...Personal Author:Richardson, David E. ;Marancik, Katrin E....2016 | Proc Natl Acad Sci U S A. 2016 Mar 22; 113(12): 3299-3304.Description:Atlantic bluefin tuna are a symbol of both the conflict between preservationist and utilitarian views of top ocean predators, and the struggle to reac...Personal Author:Brown, Stuart M. ;Heguy, Adriana...2017 | Genome Biol Evol;Description:Atlantic tomcod in the Hudson River Estuary bioaccumulate high hepatic burdens of environmental toxicants. Previously, we demonstrated that Hudson Riv...2018 | Conserv Physiol. 2018; 6(1): coy031.Description:Baleen whales have few identifiable external indicators of pregnancy state, making it challenging to study essential aspects of their biology and popu...Personal Author:Bellmore, J Ryan ;Pess, George R...2019 | Bioscience. 2019 Jan 1; 69(1): 26–39Description:One of the desired outcomes of dam decommissioning and removal is the recovery of aquatic and riparian ecosystems. To investigate this common objectiv...Personal Author:Goertz, Caroline E C ;Burek-Huntington, Kathy...2019 | Conserv Physiol. 2019; 7(1): coz071.Description:The Cook Inlet population of beluga whales (Delphinapterus leucas) is listed as endangered and continues to decline for largely unknown reasons; howev...Personal Author:Wahl, Eugene R. ;Zorita, Eduardo...2019 | Proc Natl Acad Sci U S A. 2019 Mar 19; 116(12): 5393–5398Description:Moisture delivery in California is largely regulated by the strength and position of the North Pacific jet stream (NPJ), winter high-altitude winds th...Personal Author:Peng, Ge ;Meier, Walter N.2017 | Annals of Glaciology, 59(76pt2), 191-200.Description:With rapid and accelerated Arctic sea-ice loss, it is beneficial to update and baseline historical change on the regional scales from a consistent, in...Personal Author:Muñoz, Ángel G. ;Thomson, Madeleine C....2016 | Gigascience;Description:The emergence of Zika virus (ZIKV) in Latin America and the Caribbean in 2014-2016 occurred during a period of severe drought and unusually high tempe...
More +
You May Also Like
Personal Author:
Kineman, John J. ;
Ohrenschall, Mark. A.
1992 | Key to geophysical records documentation ; no. 27
Description:
"The US Environmental Protection Agency (EPA), Environmental Research Laboratory - Corvallis, Oregon (ERL-C), established an Interagency Agreement wit...
Personal Author:
Kineman, John J.
1992 | Key to geophysical records documentation ; no. 26
Description:
"The US Environmental Protection Agency (EPA), Environmental Research Laboratory - Corvallis, Oregon (ERL-C), established an Interagency Agreement wit...
Checkout today's featured content at repository.library.noaa.gov