Species and Habitats Most at Risk in Greater Yellowstone
... Land use intensification exerts influences on wildlife both in and near sites of logging, agriculture, and human settlements as well as in the remaining natural parts of an ecosystem. Perhaps the most obvious repercussions are loss, fragmentation, and degradation of habitat. Conversion of natural ha ...
... Land use intensification exerts influences on wildlife both in and near sites of logging, agriculture, and human settlements as well as in the remaining natural parts of an ecosystem. Perhaps the most obvious repercussions are loss, fragmentation, and degradation of habitat. Conversion of natural ha ...
Frog Declines
... production and secretion of hormones. Experimental studies have also shown that exposure to commonly used herbicides such as Roundup or insecticides such as malathion or carbaryl greatly increase mortality of tadpoles [7]. Additional studies have indicated that terrestrial adult stages of amphibians ...
... production and secretion of hormones. Experimental studies have also shown that exposure to commonly used herbicides such as Roundup or insecticides such as malathion or carbaryl greatly increase mortality of tadpoles [7]. Additional studies have indicated that terrestrial adult stages of amphibians ...
16, Biological Resources
... Arctic Snow Geese - increase in population has damaged much of Arctic fragile coastal ecosystem (below) ...
... Arctic Snow Geese - increase in population has damaged much of Arctic fragile coastal ecosystem (below) ...
Including species interactions in risk assessments for global change
... ECOLOGICAL RISK ASSESSMENTS FOR GLOBAL CHANGE needed for each of these variables, with scenarios of future change (Leemans, 1996). We also need functions that relate microclimate to radiation and topography (Nikolov & Zeller, 1992); evaporative cooling to radiation (Kingsolver, 1979); evapotranspir ...
... ECOLOGICAL RISK ASSESSMENTS FOR GLOBAL CHANGE needed for each of these variables, with scenarios of future change (Leemans, 1996). We also need functions that relate microclimate to radiation and topography (Nikolov & Zeller, 1992); evaporative cooling to radiation (Kingsolver, 1979); evapotranspir ...
Mixed effects of habitat fragmentation on species richness and
... large remnant patch of the same total area (Burkey, 1989), suggesting that nature reserves should be designed to be as continuous as possible. On the other hand, environmental stochasticity such as fire, disease, invasions by non-native species, and drought may reduce the persistence time of populat ...
... large remnant patch of the same total area (Burkey, 1989), suggesting that nature reserves should be designed to be as continuous as possible. On the other hand, environmental stochasticity such as fire, disease, invasions by non-native species, and drought may reduce the persistence time of populat ...
2016 EVENET Symposium
... Resilience and evolution: oxymoron or partnership? (D. Angeler ) . . . . Eco-evolutionary dynamics and patterns of parallel evolution of host and ...
... Resilience and evolution: oxymoron or partnership? (D. Angeler ) . . . . Eco-evolutionary dynamics and patterns of parallel evolution of host and ...
Examining the Extinction of the Pleistocene Megafauna
... of local prey (large animals in the Americas) with Homo sapiens hunting practices led to profligate extermination of these species (Jelinek 1967). Since the indigenous species of the New World had not evolved in the presence of Homo sapiens, they also had not developed the natural wariness exhibited ...
... of local prey (large animals in the Americas) with Homo sapiens hunting practices led to profligate extermination of these species (Jelinek 1967). Since the indigenous species of the New World had not evolved in the presence of Homo sapiens, they also had not developed the natural wariness exhibited ...
- Wheatbelt NRM
... The ARB’s natural landscape will be influenced by new and emerging stressors in coming decades, in particular increased temperatures and increasing aridity. It is unavoidable that some ecosystems will be impacted by these multiple and overlapping stressors, potentially resulting in cascading effects ...
... The ARB’s natural landscape will be influenced by new and emerging stressors in coming decades, in particular increased temperatures and increasing aridity. It is unavoidable that some ecosystems will be impacted by these multiple and overlapping stressors, potentially resulting in cascading effects ...
Synergies among extinction drivers under global change
... extinction risk for most species are more severe than previously recognised. As such, conservation actions which only target single-threat drivers risk being inadequate because of the cascading effects caused by unmanaged synergies. Future work should focus on how climate change will interact with a ...
... extinction risk for most species are more severe than previously recognised. As such, conservation actions which only target single-threat drivers risk being inadequate because of the cascading effects caused by unmanaged synergies. Future work should focus on how climate change will interact with a ...
Mechanisms driving change: altered species interactions and
... raised temperatures vary not only seasonally, but are disparate across biogeographical regions (IPCC 2007; Visser 2008), with obvious implication for endemic species (Pounds, Fogden & Campbell 1999). Human activity is partly responsible for increased temperatures, that is, over-and-above background ...
... raised temperatures vary not only seasonally, but are disparate across biogeographical regions (IPCC 2007; Visser 2008), with obvious implication for endemic species (Pounds, Fogden & Campbell 1999). Human activity is partly responsible for increased temperatures, that is, over-and-above background ...
Limits to evolution at range margins: when and why does adaptation
... variance is assumed to be constant across the entire range. In reality, however, the amount of segregating variance evolves under the joint effects of migration, mutation and selection. Importantly, migration among populations with different trait means increases genetic variance and so facilitates ...
... variance is assumed to be constant across the entire range. In reality, however, the amount of segregating variance evolves under the joint effects of migration, mutation and selection. Importantly, migration among populations with different trait means increases genetic variance and so facilitates ...
Marron, freshwater crayfish Cherax tenuimanus
... undesirable parasites, and lastly far-ranging but slight impacts on benthic macroinvertebrate communities the degree to which would be dependent on the population size of C. tenuimanus. It is not likely to hybridize with any indigenous species as there are no native freshwater African crayfish speci ...
... undesirable parasites, and lastly far-ranging but slight impacts on benthic macroinvertebrate communities the degree to which would be dependent on the population size of C. tenuimanus. It is not likely to hybridize with any indigenous species as there are no native freshwater African crayfish speci ...
Global Population Dynamics and Hot Spots of Response to Climate
... range limits are determined primarily by interactions between a single organism and the abiotic environment (Peterson AT et al. 2002, Pearson and Dawson 2003). This approach may be applicable in single-species systems, but not where distribution or abundance can be influenced by species interactions ...
... range limits are determined primarily by interactions between a single organism and the abiotic environment (Peterson AT et al. 2002, Pearson and Dawson 2003). This approach may be applicable in single-species systems, but not where distribution or abundance can be influenced by species interactions ...
Author`s personal copy
... Thus, the term ‘invasive species’ normally refers to non-native species that are producing consequences that humans do not like and deem harmful. The harm caused by non-native species is usually described as one of three types: threats to human health, economic harm, and ecological harm. Of the thre ...
... Thus, the term ‘invasive species’ normally refers to non-native species that are producing consequences that humans do not like and deem harmful. The harm caused by non-native species is usually described as one of three types: threats to human health, economic harm, and ecological harm. Of the thre ...
autecology, geographic range, and the Holocene fossil record
... greater than 10 km. We categorized the geographic affinity for each species at each cave as follows: First, using the northern and southern extremes of each species’ range in western North America, we calculated the proportion of the geographic range lying south of each cave (Table 3). Species with ...
... greater than 10 km. We categorized the geographic affinity for each species at each cave as follows: First, using the northern and southern extremes of each species’ range in western North America, we calculated the proportion of the geographic range lying south of each cave (Table 3). Species with ...
Ecology and Disturbance
... seedlings of broad-leaved trees to survive. Or Growth of a nitrogen-fixing plant on sandy (nutrient poor) soils such as alder enriches the soil sufficiently for other species to colonize. ...
... seedlings of broad-leaved trees to survive. Or Growth of a nitrogen-fixing plant on sandy (nutrient poor) soils such as alder enriches the soil sufficiently for other species to colonize. ...
Science Express Logo Report
... dispersal limitation, and differential colonization/extinction dynamics across localities; or (iii) the interaction between stochastic and deterministic processes when stochastic variation in the history of colonization leads to more deterministic priority effects that vary across localities (16). T ...
... dispersal limitation, and differential colonization/extinction dynamics across localities; or (iii) the interaction between stochastic and deterministic processes when stochastic variation in the history of colonization leads to more deterministic priority effects that vary across localities (16). T ...
marine mammals and their environment in the
... during the 20th century, and this trend seems likely to continue in the current century. However, because the precise cause of this trend is disputed, I have treated the likely effects of climate change separately from other direct or indirect results of human activities. Habitat loss.—The marine en ...
... during the 20th century, and this trend seems likely to continue in the current century. However, because the precise cause of this trend is disputed, I have treated the likely effects of climate change separately from other direct or indirect results of human activities. Habitat loss.—The marine en ...
Adapt or disperse: understanding species persistence
... and/or survival of genotypes. However, at the current time scale of global change phenotypic plasticity seems to prevail over genetic adaptation as a way species adjust to enhanced temperatures. In one of the few studies comparing the importance of phenotypic plasticity over genetic adaptation, a ge ...
... and/or survival of genotypes. However, at the current time scale of global change phenotypic plasticity seems to prevail over genetic adaptation as a way species adjust to enhanced temperatures. In one of the few studies comparing the importance of phenotypic plasticity over genetic adaptation, a ge ...
Adapt or disperse: understanding species persistence in a changing
... and/or survival of genotypes. However, at the current time scale of global change phenotypic plasticity seems to prevail over genetic adaptation as a way species adjust to enhanced temperatures. In one of the few studies comparing the importance of phenotypic plasticity over genetic adaptation, a ge ...
... and/or survival of genotypes. However, at the current time scale of global change phenotypic plasticity seems to prevail over genetic adaptation as a way species adjust to enhanced temperatures. In one of the few studies comparing the importance of phenotypic plasticity over genetic adaptation, a ge ...
Robustness of metacommunities with omnivory to habitat destruction
... of s patches, is the probability that a neighbor for a randomly chosen s patch is also suitable. As such, it is proportional to the average size of a habitat fragment, i.e., an area of connected s patches, and thus it provides a measure of habitat fragmentation, defined as 1 qs/s (Lloyd 1967, Matsud ...
... of s patches, is the probability that a neighbor for a randomly chosen s patch is also suitable. As such, it is proportional to the average size of a habitat fragment, i.e., an area of connected s patches, and thus it provides a measure of habitat fragmentation, defined as 1 qs/s (Lloyd 1967, Matsud ...
When climate change affects where birds sing
... lthough current climate change has altered phenology, demography, abundance, and distribution of many organisms, there are relatively few studies of changes in behavior although behavior together with physiology constitutes the mechanisms underlying responses to climate change. The few studies publi ...
... lthough current climate change has altered phenology, demography, abundance, and distribution of many organisms, there are relatively few studies of changes in behavior although behavior together with physiology constitutes the mechanisms underlying responses to climate change. The few studies publi ...
Invasive Alien Species - European Commission
... become naturalised if it forms populations that can survive without humanhelp. However, it may not yet be ‘invasive’. To be classified as invasive, a species must adapt to overcome barriers in the new environment, such as, for example, a lack of its natural food source or dispersal agents. Naturalis ...
... become naturalised if it forms populations that can survive without humanhelp. However, it may not yet be ‘invasive’. To be classified as invasive, a species must adapt to overcome barriers in the new environment, such as, for example, a lack of its natural food source or dispersal agents. Naturalis ...
Changes in habitat heterogeneity alter marine sessile benthic
... rate of each individual in the absence of predators, disturbance, or competitors. ‘‘NA’’ indicates that, in the IBM model, adult competitive ability was preemptive where individuals, once settled, would occupy space and would not be removed until they died. ...
... rate of each individual in the absence of predators, disturbance, or competitors. ‘‘NA’’ indicates that, in the IBM model, adult competitive ability was preemptive where individuals, once settled, would occupy space and would not be removed until they died. ...
Land Use, Biodiversity, and Ecosystem Integrity
... for all major habitat categories in the United States, assessing loss and degradation of U.S. ecosystems, is noteworthy for its broad scope and the fine level of disaggregation with which it treats habitat types and locations.' At the same time, the study acknowledges that the information needed to ...
... for all major habitat categories in the United States, assessing loss and degradation of U.S. ecosystems, is noteworthy for its broad scope and the fine level of disaggregation with which it treats habitat types and locations.' At the same time, the study acknowledges that the information needed to ...