Population extinction and metapopulation synchrony: a reassessment

Oikos ◽  
2021 ◽  
Author(s):  
Stephen F. Matter ◽  
Alessandro Filazzola ◽  
Jens Roland
Keyword(s):  
Population Extinction

scholarly journals How Colored Environmental Noise Affects Population Extinction

2008 ◽  
Vol 101 (26) ◽  
Author(s):  
Alex Kamenev ◽  
Baruch Meerson ◽  
Boris Shklovskii
Keyword(s):  
Environmental Noise ◽  
Population Extinction

scholarly journals Contemporary risk of extinction in an extreme environment

2020 ◽  
Author(s):  
Simone Vincenzi
Keyword(s):  
Extreme Events ◽  
Quantitative Trait ◽  
Natural Populations ◽  
Extreme Environment ◽  
Vital Rates ◽  
Observation Window ◽  
Population Extinction ◽  
Risk Of Extinction ◽  
Environmental Measures ◽  
Parameter Values

AbstractThe increased frequency and intensity of extreme events are recognized among the most worrisome aspects of climate change. However, despite increased attention from scientists and conservationists, developing and testing general theories and hypotheses on the effects of extreme events on natural populations remains intrinsically challenging.Using numerical simulations with general—but realistic for moderately fast-leaving species—parameter values, I tested some of the hypotheses on risk of extinction and population and genetic dynamics in an environment in which both climate (e.g., temperature, rainfall) and point (e.g., fires, floods) extremes occur. In the simulations, a quantitative trait is selected for by a climate variable, but point extremes cause trait-independent massive mortalities.I found additive effects between age at first reproduction and fecundity on risk of extinction. The extent of population bottlenecks (operationally, the number of years in which a population was at low numbers) was a good predictor of allelic richness for the quantitative trait selected for by the climate. Simple models including basic demographic and vital rates information of the species, along with climate/environmental measures, provided excellent predictions of contemporary risk of population extinction. Mean and minimum population size measured in a 10-year “observation window” were largely the most important predictors of risk of population extinction in the following 10-year “prediction window”.

scholarly journals Population dynamics of synthetic Terraformation motifs

2016 ◽  
Author(s):  
Ricard V. Solé ◽  
Raúl Montañez ◽  
Salvador Duran Nebreda ◽  
Daniel Rodriguez-Amor ◽  
Blai Vidiella ◽  
...  
Keyword(s):  
Habitat Degradation ◽  
Ecological Engineering ◽  
Ecological Interactions ◽  
Stable States ◽  
Population Extinction ◽  
Intensive Exploitation ◽  
Engineering Designs ◽  
Synthetic Organisms ◽  
Multiple Stable States ◽  
Catastrophic Shifts

Ecosystems are complex systems, currently experiencing several threats associated with global warming, intensive exploitation, and human-driven habitat degradation. Such threats are pushing ecosystems to the brink of collapse. Because of a general presence of multiple stable states, including states involving population extinction, and due to intrinsic nonlinearities associated with feedback loops, collapse can occur in a catastrophic manner. Such catastrophic shifts have been suggested to pervade many of the future transitions affecting ecosystems at many different scales. Many studies have tried to delineate potential warning signals predicting such ongoing shifts but little is known about how such transitions might be effectively prevented. It has been recently suggested that a potential path to prevent or modify the outcome of these transitions would involve designing synthetic organisms and synthetic ecological interactions that could push these endangered systems out of the critical boundaries. Four classes of such ecological engineering designs orTerraformation motifshave been defined in a qualitative way. Here we develop the simplest mathematical models associated with these motifs, defining the expected stability conditions and domains where the motifs shall properly work.

scholarly journals ANALISIS PENERAPAN SANKSI PIDANA TENTANG KEJAHATAN KONSERVASI SUMBER DAYA ALAM HAYATI

2015 ◽  
Vol 44 (2) ◽  
pp. 243
Author(s):  
S.Endang Prasetyawati
Keyword(s):  
Sustainable Development ◽  
Endangered Species ◽  
Natural Resources ◽  
Human Behavior ◽  
Native Population ◽  
Population Extinction ◽  
Natural Diversity ◽  
Authorized Capital

Management of natural resources and ecosystems as part of the authorized capital is essentially an integral part of sustainable development as an accomplishment of Pancasila. Indonesian nation has a rich natural diversity in it, which are of a variety of animals, one of them is an endangered species. Human behavior can currently threaten the extinction of endangered species which human ambition would like to have but do not care about habitat native population. Extinction of rare animals can be prevented by established legal protections for endangered speciesPengelolaan sumber daya alam hayati dan ekosistemnya sebagai bagian dari modal dasar tersebut pada hakikatnya merupakan bagian integral dari pembangunan nasional yang berkelanjutan sebagai pengamalan Pancasila. Bangsa Indonesia memiliki keanekaragaman kekayaan alam di dalamnya, diantaranya mempunyai berbagai macam satwa, salah satunya satwa langka. Perilaku manusia saat ini dapat mengancam kepunahan dari satwa langka yang mana ambisi manusia ingin memiliki tetapi tidak memperdulikan populasinya dihabitat asalnya. Kepunahan satwa langka ini dapat dicegah dengan ditetapkan perlindungan hukum terhadap satwa langka yang dilindungi

scholarly journals Lagoon Resident Fish Species of Conservation Interest According to the Habitat Directive (92/43/CEE): A Review on Their Potential Use as Ecological Indicator Species

Water ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 2059 ◽  
Author(s):  
Chiara Facca ◽  
Francesco Cavraro ◽  
Piero Franzoi ◽  
Stefano Malavasi
Keyword(s):  
Life Cycle ◽  
Fish Species ◽  
Coastal Lagoon ◽  
Salt Marshes ◽  
Coastal Lagoons ◽  
Conservation Status ◽  
Local Population ◽  
Ecological Indicator ◽  
Habitat Directive ◽  
Population Extinction

Transitional waters are fragile ecosystems with high ecological, social and economic values, that undergo numerous threats. According to the information provided by European Member States in the framework of the European Directive 92/43/EEC (Habitat Directive), the main threat to these ecosystems is represented by morphological and hydrological changes. The present work focuses on six lagoon fish species included in the Habitat Directive annex II (species requiring conservation measures: Aphanius fasciatus, A. iberus, Knipowitschia panizzae, Ninnigobius canestrinii, Valencia hispanica and V. letourneuxi) that spend their entire life cycle in the Mediterranean priority habitat 1150* “Coastal lagoons”. The overview of the current scientific literature allowed us to highlight how the presence and abundance of these species may provide important indications on the conservation status of coastal lagoon habitats. In fact, their occurrence, distribution and biology depend on the presence of peculiar structures, such as salt marshes, small channels, isolated pools and oligohaline areas. Coastal lagoon fragmentation and habitat loss have led to a significant reduction in genetic diversity or local population extinction. Although Aphanius and gobies have been shown to survive in eutrophic environments, it is clear that they cannot complete their life cycle without salt marshes (mainly Aphanius) and wetland areas (mainly gobies).

Population extinction risks of three Neotropical small mammal species

Oecologia ◽  
1998 ◽  
Vol 115 (1-2) ◽  
pp. 120-126 ◽  
Author(s):  
Mauricio Lima ◽  
Pablo A. Marquet ◽  
Fabian M. Jaksic
Keyword(s):  
Small Mammal ◽  
Mammal Species ◽  
Population Extinction ◽  
Small Mammal Species

scholarly journals Climate change contributes to widespread declines among bumble bees across continents

Science ◽  
2020 ◽  
Vol 367 (6478) ◽  
pp. 685-688 ◽  
Author(s):  
Peter Soroye ◽  
Tim Newbold ◽  
Jeremy Kerr
Keyword(s):  
Climate Change ◽  
Extinction Risk ◽  
Biodiversity Loss ◽  
Bumble Bee ◽  
Species Extinction ◽  
Population Extinction ◽  
Colonization Dynamics ◽  
Term Data ◽  
Related Population

Climate change could increase species’ extinction risk as temperatures and precipitation begin to exceed species’ historically observed tolerances. Using long-term data for 66 bumble bee species across North America and Europe, we tested whether this mechanism altered likelihoods of bumble bee species’ extinction or colonization. Increasing frequency of hotter temperatures predicts species’ local extinction risk, chances of colonizing a new area, and changing species richness. Effects are independent of changing land uses. The method developed in this study permits spatially explicit predictions of climate change–related population extinction-colonization dynamics within species that explains observed patterns of geographical range loss and expansion across continents. Increasing frequencies of temperatures that exceed historically observed tolerances help explain widespread bumble bee species decline. This mechanism may also contribute to biodiversity loss more generally.

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