Nevada Wildlife Action Plan - Nevada Department of Wildlife
... system than cottonwood ever was, and was much more prevalent historically than it is today because it has been severely invaded and replaced along many stretches by tamarisk. This midstory is populated by a diverse avifauna, including several species that thrive in the interface between mesquite and ...
... system than cottonwood ever was, and was much more prevalent historically than it is today because it has been severely invaded and replaced along many stretches by tamarisk. This midstory is populated by a diverse avifauna, including several species that thrive in the interface between mesquite and ...
Regeneration of Oak and Northern Hardwood Forests
... • Evidence from these experimental studies illustrates the severe effects of fire exclusion and high deer populations on forest regeneration. Conventional vegetation management is unlikely, under current conditions, to provide an easy, short-term resolution to these problems. Better ecological under ...
... • Evidence from these experimental studies illustrates the severe effects of fire exclusion and high deer populations on forest regeneration. Conventional vegetation management is unlikely, under current conditions, to provide an easy, short-term resolution to these problems. Better ecological under ...
Guidance White Paper Number 2 Issue: WHAT CONSTITUTES
... Introduction to the Issue The re-establishment and maintenance of natural ecosystem components and processes on national park lands through intervention has become an increasingly important resources management function. This is reflected in National Park Service Management Policies (NPS 2001: 4.15, ...
... Introduction to the Issue The re-establishment and maintenance of natural ecosystem components and processes on national park lands through intervention has become an increasingly important resources management function. This is reflected in National Park Service Management Policies (NPS 2001: 4.15, ...
Sandhill Ecosystems
... • Sandhill dominated by longleaf pine was once widespread on well-drained sands throughout the Southeastern U.S. Coastal plane • This longleaf pine ecosystem has declined by 98 percent across its range and is considered critically endangered • From 1936 to 1995, Florida experienced a 90 percent decl ...
... • Sandhill dominated by longleaf pine was once widespread on well-drained sands throughout the Southeastern U.S. Coastal plane • This longleaf pine ecosystem has declined by 98 percent across its range and is considered critically endangered • From 1936 to 1995, Florida experienced a 90 percent decl ...
The Value of Animal Behavior in Evaluations of Restoration Success
... press). Variations in behavior are linked to variation in processes like seed dispersal that contribute to restoration success (Holl 1998; Zahawi & Augspurger 2006). Animal behavior influences other processes that are critical to restoration success and ecosystem function including decomposition, he ...
... press). Variations in behavior are linked to variation in processes like seed dispersal that contribute to restoration success (Holl 1998; Zahawi & Augspurger 2006). Animal behavior influences other processes that are critical to restoration success and ecosystem function including decomposition, he ...
Blue-winged Teal Blue-winged Teal Minnesota Conservation
... Few teal nest in the northern boreal forest or arctic habitats although some birds are displaced to these areas when drought conditions occur in the Prairie Pothole Region. Nests are usually located near water, but may be as far as 1 mile from the nearest wetland. Alfalfa and bluegrass in cult ...
... Few teal nest in the northern boreal forest or arctic habitats although some birds are displaced to these areas when drought conditions occur in the Prairie Pothole Region. Nests are usually located near water, but may be as far as 1 mile from the nearest wetland. Alfalfa and bluegrass in cult ...
National Wilderness Steering Committee
... Introduction to the Issue The re-establishment and maintenance of natural ecosystem components and processes on national park lands through intervention has become an increasingly important resources management function. This is reflected in National Park Service Management Policies (NPS 2001: 4.15, ...
... Introduction to the Issue The re-establishment and maintenance of natural ecosystem components and processes on national park lands through intervention has become an increasingly important resources management function. This is reflected in National Park Service Management Policies (NPS 2001: 4.15, ...
Preview Sample 2
... B) An extensive region of land that includes one or more areas undisturbed by humans is called a zoned reserve. C) Few, if any, ecosystems remain undisturbed by humans. D) The areas surrounding a zoned reserve are not to be used to support human populations. E) Costa Rica hopes to maintain at least ...
... B) An extensive region of land that includes one or more areas undisturbed by humans is called a zoned reserve. C) Few, if any, ecosystems remain undisturbed by humans. D) The areas surrounding a zoned reserve are not to be used to support human populations. E) Costa Rica hopes to maintain at least ...
Biodiversity in tropical agroforests and the ecological role of ants
... agriculture and conservation, patterns and mechanisms for ant diversity loss with agricultural intensification, importance of ants as control agents of pests and fungal diseases, and whether ant diversity may influence the functional role of ants as predators are addressed. Furthermore, because of t ...
... agriculture and conservation, patterns and mechanisms for ant diversity loss with agricultural intensification, importance of ants as control agents of pests and fungal diseases, and whether ant diversity may influence the functional role of ants as predators are addressed. Furthermore, because of t ...
Evolutionary consequences of changes in species` geographical
... Alluding to Darwin who used ‘‘permanent varieties’’ for species, there is not enough time for the varieties to become permanent. By an analogous argument, Diamond explained patterns in island endemism in land birds (32). Small islands or archipelagos with high population extinction rates produce few ...
... Alluding to Darwin who used ‘‘permanent varieties’’ for species, there is not enough time for the varieties to become permanent. By an analogous argument, Diamond explained patterns in island endemism in land birds (32). Small islands or archipelagos with high population extinction rates produce few ...
Regional climate change adaptation strategies for biodiversity
... the next century regardless of the scope and magnitude of mitigation efforts (IPCC, 2007). The rapid rate of climate change, coupled with other anthropogenic stresses, will deplete species diversity in some regions if habitats become unsuitable and migration is insufficient. Although climate change p ...
... the next century regardless of the scope and magnitude of mitigation efforts (IPCC, 2007). The rapid rate of climate change, coupled with other anthropogenic stresses, will deplete species diversity in some regions if habitats become unsuitable and migration is insufficient. Although climate change p ...
corridors may not improve the conservation value of small reserves
... size constant over time (i.e., pre- and post-harvest) and altered connectedness. Hence, corridor presence is not confounded with patch size. Although we only had one year of pre-harvest data and annual variability in bird abundance is high, we monitored reference reserves throughout the study in ord ...
... size constant over time (i.e., pre- and post-harvest) and altered connectedness. Hence, corridor presence is not confounded with patch size. Although we only had one year of pre-harvest data and annual variability in bird abundance is high, we monitored reference reserves throughout the study in ord ...
Endangered Species
... Wildlife Service to manage over 500 refuges with over 90 million acres for the conversation of endangered species, ecosystems, and natural diversity. ...
... Wildlife Service to manage over 500 refuges with over 90 million acres for the conversation of endangered species, ecosystems, and natural diversity. ...
Evolutionary consequences of changes in species` geographical
... Alluding to Darwin who used ‘‘permanent varieties’’ for species, there is not enough time for the varieties to become permanent. By an analogous argument, Diamond explained patterns in island endemism in land birds (32). Small islands or archipelagos with high population extinction rates produce few ...
... Alluding to Darwin who used ‘‘permanent varieties’’ for species, there is not enough time for the varieties to become permanent. By an analogous argument, Diamond explained patterns in island endemism in land birds (32). Small islands or archipelagos with high population extinction rates produce few ...
H. pakistanae - Sam Houston State University
... More data has resulted in a greater need for mathematical and statistical models to interpret it. ...
... More data has resulted in a greater need for mathematical and statistical models to interpret it. ...
Energy, Density, and Constraints to Species Richness: Ant
... that taxon—the taxon’s density (D). Second, as D increases, more species of that taxon can exist at a given population size (conversely, as the number of individuals decreases, population size decreases, and local extinction rates increase, lowering S). The energy limitation hypothesis thus posits t ...
... that taxon—the taxon’s density (D). Second, as D increases, more species of that taxon can exist at a given population size (conversely, as the number of individuals decreases, population size decreases, and local extinction rates increase, lowering S). The energy limitation hypothesis thus posits t ...
Territoriality in the South African Intertidal Limpet Scutellastra
... effective. L. gigantea has been studied extensively and has been shown to defend a small territory (< 900 cm2) while moving locally to forage [28]. Contrastingly, Scutellastra cochlear maintains a territory of red algae not much larger than the size of its own body, taking many years to mature and m ...
... effective. L. gigantea has been studied extensively and has been shown to defend a small territory (< 900 cm2) while moving locally to forage [28]. Contrastingly, Scutellastra cochlear maintains a territory of red algae not much larger than the size of its own body, taking many years to mature and m ...
Origin matters: alien consumers inflict greater damage on prey
... following keywords: introduced species, alien species, nonindigenous species, non-native species, colonizing species or exotic species; we then combined that search with one using the keywords predat*, herbivore* or prey. To obtain more studies involving native consumers and native prey, we conducte ...
... following keywords: introduced species, alien species, nonindigenous species, non-native species, colonizing species or exotic species; we then combined that search with one using the keywords predat*, herbivore* or prey. To obtain more studies involving native consumers and native prey, we conducte ...
Biologist letter on red-legged frog habitat
... Many amphibian species are in decline globally. These losses have been much publicized and biologists are often asked for an explanation of their cause. Factors leading to a reduction in amphibian numbers are usually numerous, species specific, and many variables may interact synergistically (e.g., ...
... Many amphibian species are in decline globally. These losses have been much publicized and biologists are often asked for an explanation of their cause. Factors leading to a reduction in amphibian numbers are usually numerous, species specific, and many variables may interact synergistically (e.g., ...
Does diversity beget diversity? A case study of crops
... diversity’, and the other is that diversity limits itself by niche saturation. When comparing across trophic levels, ‘diversity begets diversity’ is a trivial result of host specificity. If herbivores are to some extent specialized on food plants, more herbivore species will occur in systems with mo ...
... diversity’, and the other is that diversity limits itself by niche saturation. When comparing across trophic levels, ‘diversity begets diversity’ is a trivial result of host specificity. If herbivores are to some extent specialized on food plants, more herbivore species will occur in systems with mo ...
Mossy Prehensile-tailed Gecko Rhacodactylus chahoua Class
... They live a long time in human care, which can cause problems with people abandoning them. • Threats: It is presumed to have suffered a substantial past reduction in population size and extent through habitat loss, mainly associated with logging and the clearance of lowland forests for agriculture [ ...
... They live a long time in human care, which can cause problems with people abandoning them. • Threats: It is presumed to have suffered a substantial past reduction in population size and extent through habitat loss, mainly associated with logging and the clearance of lowland forests for agriculture [ ...
Fact sheet Mouflon
... Ovis gemelini musimon have a vigorous and sturdy body with short but muscular legs adapted to the steep terrain. Female's body has a length of 115-125 cm and a height of 65-75 cm. Males are bigger, their body length ranges between 125 and 140 cm and the height between 75 and 85 cm. Weight ranges bet ...
... Ovis gemelini musimon have a vigorous and sturdy body with short but muscular legs adapted to the steep terrain. Female's body has a length of 115-125 cm and a height of 65-75 cm. Males are bigger, their body length ranges between 125 and 140 cm and the height between 75 and 85 cm. Weight ranges bet ...
The evolutionary consequences of biological
... growth and expansion of an initially small population (Crooks 2005), another possibility is that it represents a time during which adaptive evolution to conditions in the new range is occurring, and invasive expansion only occurs after some evolutionary breakthrough is achieved. For example, genetic ...
... growth and expansion of an initially small population (Crooks 2005), another possibility is that it represents a time during which adaptive evolution to conditions in the new range is occurring, and invasive expansion only occurs after some evolutionary breakthrough is achieved. For example, genetic ...
On the Links Between Managerial Actions, Keystone Species
... two keystone species in our ecological-economic system are healthy. Then, because of the activities mentioned in the previous paragraph, during this time period, each of the two keystone species will be endangeredCand hence our ecological-economic system will be endangeredCwith probability p. To cap ...
... two keystone species in our ecological-economic system are healthy. Then, because of the activities mentioned in the previous paragraph, during this time period, each of the two keystone species will be endangeredCand hence our ecological-economic system will be endangeredCwith probability p. To cap ...
Habitat and Species Survey Guidelines
... This is the standard technique for classifying and mapping British habitats as laid down by the Joint Nature Conservation Committee (JNCC). A Phase 1 Habitat Survey would identify, map and describe the main habitats, giving dominant plant species and target notes about special value in each compartm ...
... This is the standard technique for classifying and mapping British habitats as laid down by the Joint Nature Conservation Committee (JNCC). A Phase 1 Habitat Survey would identify, map and describe the main habitats, giving dominant plant species and target notes about special value in each compartm ...
Biodiversity action plan
This article is about a conservation biology topic. For other uses of BAP, see BAP (disambiguation).A biodiversity action plan (BAP) is an internationally recognized program addressing threatened species and habitats and is designed to protect and restore biological systems. The original impetus for these plans derives from the 1992 Convention on Biological Diversity (CBD). As of 2009, 191 countries have ratified the CBD, but only a fraction of these have developed substantive BAP documents.The principal elements of a BAP typically include: (a) preparing inventories of biological information for selected species or habitats; (b) assessing the conservation status of species within specified ecosystems; (c) creation of targets for conservation and restoration; and (d) establishing budgets, timelines and institutional partnerships for implementing the BAP.