Cynanchum elegans review of information
... There is limited knowledge of the species biology. Cynanchum elegans is clonal and there is uncertainty in defining a plant. One population could consist of only one plant, or, if there are clumps of stems, it may be assumed that a clump is a single plant. From years of monitoring the plants in the ...
... There is limited knowledge of the species biology. Cynanchum elegans is clonal and there is uncertainty in defining a plant. One population could consist of only one plant, or, if there are clumps of stems, it may be assumed that a clump is a single plant. From years of monitoring the plants in the ...
Species name (Species name)
... sparrow is an ISSSSP Sensitive Species in Oregon and Washington, and is designated as an Oregon Conservation Strategy (OCS) species in the Willamette Valley and designated as a subspecies of concern by the U.S. Fish and Wildlife Service (ODFW 2006, USFWS 2009). Limiting factors are reported to ...
... sparrow is an ISSSSP Sensitive Species in Oregon and Washington, and is designated as an Oregon Conservation Strategy (OCS) species in the Willamette Valley and designated as a subspecies of concern by the U.S. Fish and Wildlife Service (ODFW 2006, USFWS 2009). Limiting factors are reported to ...
Conservation status of Yellow-spotted Bell Frog in New South Wales
... Given that there are no records of the species since 1980, the total population is likely to include fewer than 50 mature individuals, and may already be extinct. However, the species is not yet considered extinct because of the lack of surveys of potential habitat, especially in areas between the n ...
... Given that there are no records of the species since 1980, the total population is likely to include fewer than 50 mature individuals, and may already be extinct. However, the species is not yet considered extinct because of the lack of surveys of potential habitat, especially in areas between the n ...
Information Sheets - Cessnock City Council
... aggressively invade areas, displacing native plants and animals. Weeds that have invaded native ecosystems in the Hunter valley include: Salvinia, African Box Thorn, Alligator Weed, and Mother of Millions. Pest animals Introduced animal species can compete with, and prey upon, native animals. They c ...
... aggressively invade areas, displacing native plants and animals. Weeds that have invaded native ecosystems in the Hunter valley include: Salvinia, African Box Thorn, Alligator Weed, and Mother of Millions. Pest animals Introduced animal species can compete with, and prey upon, native animals. They c ...
Invasive alien species: priorities for international research
... high degree of endemism, some components of which are severely threatened by IAS. The MA identified IAS as the most significant driver of biodiversity loss for island ecosystems.. A desk-study audit of IAS in the Overseas Territories has recently been completed (JNCC Report 372), although there are ...
... high degree of endemism, some components of which are severely threatened by IAS. The MA identified IAS as the most significant driver of biodiversity loss for island ecosystems.. A desk-study audit of IAS in the Overseas Territories has recently been completed (JNCC Report 372), although there are ...
18th Annual Graduate Student Symposium
... found working at scales ranging from the molecular level to ecosystem responses to global change. PEEC is committed to supporting graduate education and research through summer research grants, travel grants, and an active seminar series. We thank the Department of Animal Biology for their generous ...
... found working at scales ranging from the molecular level to ecosystem responses to global change. PEEC is committed to supporting graduate education and research through summer research grants, travel grants, and an active seminar series. We thank the Department of Animal Biology for their generous ...
Infectious disease and primate conservation
... respiratory pathogens can ‘spill over’ from humans to wild primates and cause substantial mortality (Wallis and Lee 1999; Koendgen et al. 2008; Palacios et al. 2011). While cases of sudden die-offs caused by viruses and bacteria attract much attention, even typical macro-parasites—which are though ...
... respiratory pathogens can ‘spill over’ from humans to wild primates and cause substantial mortality (Wallis and Lee 1999; Koendgen et al. 2008; Palacios et al. 2011). While cases of sudden die-offs caused by viruses and bacteria attract much attention, even typical macro-parasites—which are though ...
Resource Partitioning in Ecological Communities
... 22-28). Certain lizards seem regularly to show higher ratios (29). Furthermore, insectivorous birds and lizards sometimes increase ratios with increasing body size (27, 29). Why should sizes be a constant or increasing multiple of one another rather than be separated by a constant difference? If pop ...
... 22-28). Certain lizards seem regularly to show higher ratios (29). Furthermore, insectivorous birds and lizards sometimes increase ratios with increasing body size (27, 29). Why should sizes be a constant or increasing multiple of one another rather than be separated by a constant difference? If pop ...
A Hierarchical Ecological Approach to Conserving Marine
... degree to which biological or physical processes structure various types of marine communities (May 1992; National Research Council 1995). The conservation implications of this debate are clear: how can an environment be conserved when the components that support it are undefined? This difficulty is ...
... degree to which biological or physical processes structure various types of marine communities (May 1992; National Research Council 1995). The conservation implications of this debate are clear: how can an environment be conserved when the components that support it are undefined? This difficulty is ...
Laurance 2008 - Reed F. Noss Lab at the University of Central
... relationships is a litmus test for IBT (Gilbert, 1980; Abbott, 1983) because other biogeographic phenomena, such as the species–area relationship, can arise for reasons aside from those hypothesized by IBT (for example, higher habitat diversity, rather than lower extinction rates, can cause species ...
... relationships is a litmus test for IBT (Gilbert, 1980; Abbott, 1983) because other biogeographic phenomena, such as the species–area relationship, can arise for reasons aside from those hypothesized by IBT (for example, higher habitat diversity, rather than lower extinction rates, can cause species ...
Conservation of Deep Pelagic Biodiversity
... layers, because of their high productivity, are where the larvae and juveniles of many deep-living species develop, before returning to the adult depth range. Because these early life-history stages may have narrow physiological tolerances, rising surface temperatures may play a role in altering the ...
... layers, because of their high productivity, are where the larvae and juveniles of many deep-living species develop, before returning to the adult depth range. Because these early life-history stages may have narrow physiological tolerances, rising surface temperatures may play a role in altering the ...
Endangered Species of Illinois
... Deforestation: clearing or removal of a forest or stand of trees where the land is used for other purposes (Examples include: farming/agriculture, growth of cities, new homes). The fragmentations of habitats into tiny pieces all play a role. Draining wetlands or other water ways also adds to ha ...
... Deforestation: clearing or removal of a forest or stand of trees where the land is used for other purposes (Examples include: farming/agriculture, growth of cities, new homes). The fragmentations of habitats into tiny pieces all play a role. Draining wetlands or other water ways also adds to ha ...
Extinction considerations for diadromous fishes
... species, spread naturally or, more frequently, transported by humans to new environments. Some introductions are relatively benign, but others cause major disruptions to ecosystems and may play a significant role in elevating extinction risk. The spread of nonindigenous species is second only to hab ...
... species, spread naturally or, more frequently, transported by humans to new environments. Some introductions are relatively benign, but others cause major disruptions to ecosystems and may play a significant role in elevating extinction risk. The spread of nonindigenous species is second only to hab ...
Untitled
... invasion rests on fire suppression (Gleadow and Ashton 1981). Allison (2011), working on restorations in the American Midwest, found that most of the “invasive” species were not native, but that a few species native to the region (e.g., Rhus glabra, Rubus allegheniensis, Cornus racemosa) had become ...
... invasion rests on fire suppression (Gleadow and Ashton 1981). Allison (2011), working on restorations in the American Midwest, found that most of the “invasive” species were not native, but that a few species native to the region (e.g., Rhus glabra, Rubus allegheniensis, Cornus racemosa) had become ...
cap 52 ecologia
... – Abiotic factors, including nonliving attributes such as temperature, light, water, and nutrients – Biotic factors, including other organisms that are part of an individual’s environment ...
... – Abiotic factors, including nonliving attributes such as temperature, light, water, and nutrients – Biotic factors, including other organisms that are part of an individual’s environment ...
Document
... in the reference ecosystem and that provide appropriate community structure. What is the ecosystem type? What is the characteristic assemblage of plant species? What animal species are likely inhabitants of such a system? Given the characteristics of the site, its location and the project go ...
... in the reference ecosystem and that provide appropriate community structure. What is the ecosystem type? What is the characteristic assemblage of plant species? What animal species are likely inhabitants of such a system? Given the characteristics of the site, its location and the project go ...
Critical Biodiversity
... some other site (m,n) at time t. The model is dynamic so the chain of interdependency at any site and time t may be different at time t9. The organisms exist on this multidimensional lattice with local conditions defined both by the physical landscape (e(x,y)), which does not change, and by the pres ...
... some other site (m,n) at time t. The model is dynamic so the chain of interdependency at any site and time t may be different at time t9. The organisms exist on this multidimensional lattice with local conditions defined both by the physical landscape (e(x,y)), which does not change, and by the pres ...
Acadian Flycatcher (Empidonax virescens)
... unsuitable. Isolation of mature evergreen stands is also an issue for Bachman’s sparrows; however, because the conditions within them are less ephemeral, birds have a longer time to access them. Thus, they can likely be more isolated and still be colonized. We assumed the stability of these habitat ...
... unsuitable. Isolation of mature evergreen stands is also an issue for Bachman’s sparrows; however, because the conditions within them are less ephemeral, birds have a longer time to access them. Thus, they can likely be more isolated and still be colonized. We assumed the stability of these habitat ...
Animal species diversity driven by habitat heterogeneity
... measurements of habitat heterogeneity have been used at which spatial and temporal study scales. We then present the ‘keystone structure concept’ which we want to bring forward for future discussion. Our concept explains that the presence of ‘keystone structures’ of the vegetation may be indicated b ...
... measurements of habitat heterogeneity have been used at which spatial and temporal study scales. We then present the ‘keystone structure concept’ which we want to bring forward for future discussion. Our concept explains that the presence of ‘keystone structures’ of the vegetation may be indicated b ...
Extending the concept of keystone species to
... The concept of keystone species radically changed the field of ecology, exemplifying how ecological communities are more than just collections of species. A keystone species is defined as a species with key roles in community structure and/or ecosystem functioning (Mills et al. 1993; Power et al. 19 ...
... The concept of keystone species radically changed the field of ecology, exemplifying how ecological communities are more than just collections of species. A keystone species is defined as a species with key roles in community structure and/or ecosystem functioning (Mills et al. 1993; Power et al. 19 ...
biodiversity in drylands - Food and Agriculture Organization of the
... diversity they value most in domestic livestock and crops. 3.2- Status of Dryland Biodiversity Dryland ecosystems are unique. One can site such examples as the Mediterranean systems (e.g. the distinctive sclerophyllous vegetation of the Mediterranean Basin, drylands of Southern Australia and Califor ...
... diversity they value most in domestic livestock and crops. 3.2- Status of Dryland Biodiversity Dryland ecosystems are unique. One can site such examples as the Mediterranean systems (e.g. the distinctive sclerophyllous vegetation of the Mediterranean Basin, drylands of Southern Australia and Califor ...
Slide 1
... In the 1990s, sea otter populations off the coast of Alaska declined because orcas ate large numbers of otters. What effect did this have on the sea otters’ ecosystem? . Sumber: www.aisd.net/aisd/Portals/73/1/a/.../12F%20Ecosystem%20Stability.ppt ...
... In the 1990s, sea otter populations off the coast of Alaska declined because orcas ate large numbers of otters. What effect did this have on the sea otters’ ecosystem? . Sumber: www.aisd.net/aisd/Portals/73/1/a/.../12F%20Ecosystem%20Stability.ppt ...
Indirect Effects of a Keystone Herbivore Elevate Local Animal Diversity
... the mesh size of the exclosure fences is .10 cm. Many herpetological studies using drift fences and pitfall traps show animals trespassing fencing even when made of solid aluminum flashing (e.g., Cook et al. 2006). Therefore, it seems unlikely that fencing with such a large mesh would create an obst ...
... the mesh size of the exclosure fences is .10 cm. Many herpetological studies using drift fences and pitfall traps show animals trespassing fencing even when made of solid aluminum flashing (e.g., Cook et al. 2006). Therefore, it seems unlikely that fencing with such a large mesh would create an obst ...
Priority Research and Management Issues for the Imperiled Great
... Past and present land uses, climate change, invasion of nonnative species, and altered fire regimes are influencing the region’s ecosystems and resulting in large-scale vegetation type conversions. Sagebrush ecosystems have been identified as one of the most endangered ecosystem types in the United ...
... Past and present land uses, climate change, invasion of nonnative species, and altered fire regimes are influencing the region’s ecosystems and resulting in large-scale vegetation type conversions. Sagebrush ecosystems have been identified as one of the most endangered ecosystem types in the United ...
Reconciliation ecology
Reconciliation ecology is the branch of ecology which studies ways to encourage biodiversity in human-dominated ecosystems. Michael Rosenzweig first articulated the concept in his book Win-Win Ecology, based on the theory that there is not enough area for all of earth’s biodiversity to be saved within designated nature preserves. Therefore, humans should increase biodiversity in human-dominated landscapes. By managing for biodiversity in ways that do not decrease human utility of the system, it is a ""win-win"" situation for both human use and native biodiversity. The science is based in the ecological foundation of human land-use trends and species-area relationships. It has many benefits beyond protection of biodiversity, and there are numerous examples of it around the globe. Aspects of reconciliation ecology can already be found in management legislation, but there are challenges in both public acceptance and ecological success of reconciliation attempts.