Wildlife Benefits from Conservation Tillage
... Winter Habitat High quality winter habitats for upland birds, particularly gallinaceous game birds in farmland, are frequently more complex than breeding habitats. The degree of interspersion, the diversity of cover types, and the quality of those cover types typically determine the winter carrying ...
... Winter Habitat High quality winter habitats for upland birds, particularly gallinaceous game birds in farmland, are frequently more complex than breeding habitats. The degree of interspersion, the diversity of cover types, and the quality of those cover types typically determine the winter carrying ...
Salt Marsh Harvest Mouse (Reithrodontomys raviventris)
... Baylands Ecosystem Habitat Goals Science Update (2015) Science Foundation Chapter 5: Appendix 5.1 – Case Study, Salt Marsh Harvest Mouse (Reithrodontomys raviventris) Unanswered questions about habitat use by the mouse include their potential use of brackish marshes in the southern San Francisco Ba ...
... Baylands Ecosystem Habitat Goals Science Update (2015) Science Foundation Chapter 5: Appendix 5.1 – Case Study, Salt Marsh Harvest Mouse (Reithrodontomys raviventris) Unanswered questions about habitat use by the mouse include their potential use of brackish marshes in the southern San Francisco Ba ...
Ecosystem services and conservation strategy: beware the silver bullet
... not have an equivalent value: as he puts it “not all ecological systems are pearls of great price” (p. 38). Furthermore, these values can change over time, especially as a consequence of changing economic circumstances, which can equally strip ecosystems of their value. Thus, in the bottomland fores ...
... not have an equivalent value: as he puts it “not all ecological systems are pearls of great price” (p. 38). Furthermore, these values can change over time, especially as a consequence of changing economic circumstances, which can equally strip ecosystems of their value. Thus, in the bottomland fores ...
Small Game Management in Georgia - Georgia DNR
... Annual mortality rates for quail vary from 60-80 percent depending on habitat quality, weather, predator densities, hunting pressure and other factors. Studies suggest quail chick mortality is 50 percent or more between hatching and 15 weeks of age. This loss can be reduced by improving brood habita ...
... Annual mortality rates for quail vary from 60-80 percent depending on habitat quality, weather, predator densities, hunting pressure and other factors. Studies suggest quail chick mortality is 50 percent or more between hatching and 15 weeks of age. This loss can be reduced by improving brood habita ...
Impacts of Neonicotinoid Insecticides on Biodiversity
... tetanic contractions, neuromuscular destruction and death. Non-target plant-feeding insect groups (e.g., bees, certain moths and butterflies) exposed to these insecticides are at risk. Declines in these insect groups are well documented, while noting that these declines can be attributed to habitat ...
... tetanic contractions, neuromuscular destruction and death. Non-target plant-feeding insect groups (e.g., bees, certain moths and butterflies) exposed to these insecticides are at risk. Declines in these insect groups are well documented, while noting that these declines can be attributed to habitat ...
Asymmetric effects of intra- and interspecific competition on a pond
... paedomorphic rates than conspecifics. Because overwintering in an immature state delays reproduction and may have other fitness costs for each final adult morph, we predicted that overwintering should primarily occur only under the highest larval densities where larvae cannot complete metamorphosis and ...
... paedomorphic rates than conspecifics. Because overwintering in an immature state delays reproduction and may have other fitness costs for each final adult morph, we predicted that overwintering should primarily occur only under the highest larval densities where larvae cannot complete metamorphosis and ...
Experimental evidence for indirect facilitation among invasive plants
... 2005) or herbs (Carino & Daehler 2002) increase soil nitrogen availability, which then benefits other non-native species. Similarly, intraspecific facilitation can occur when adult invasive plants provide favourable abiotic conditions for offspring (Reinhart, Maestre & Callaway 2006; Saccone et al. 20 ...
... 2005) or herbs (Carino & Daehler 2002) increase soil nitrogen availability, which then benefits other non-native species. Similarly, intraspecific facilitation can occur when adult invasive plants provide favourable abiotic conditions for offspring (Reinhart, Maestre & Callaway 2006; Saccone et al. 20 ...
Petition to list the Giant Palouse Earthworm
... B over utilization for commercial, recreational, scientific, or educational purposes; C disease or predation; D inadequacy of existing regulatory mechanisms; E other natural or manmade factors affecting its continued existence. Factors A, B, C, D, and E play a significant role in endangering the con ...
... B over utilization for commercial, recreational, scientific, or educational purposes; C disease or predation; D inadequacy of existing regulatory mechanisms; E other natural or manmade factors affecting its continued existence. Factors A, B, C, D, and E play a significant role in endangering the con ...
P for Two, Sharing a Scarce Resource: Soil
... rhizosphere and indirect, microbially mediated processes will be addressed. Such positive interactions are particularly valuable when resources are limited, as occurs in low-input agroecosystems. For example, beneficial effects of intercropping have been observed at lower rates of P fertilizer appli ...
... rhizosphere and indirect, microbially mediated processes will be addressed. Such positive interactions are particularly valuable when resources are limited, as occurs in low-input agroecosystems. For example, beneficial effects of intercropping have been observed at lower rates of P fertilizer appli ...
The American Alligator: An Indicator Species for Everglades
... The American alligator once occupied all wetland habitats in south Florida, from freshwater marshes and swamps to mangrove estuaries. As development and watermanagement practices have reduced the quantity and quality of these habitats, alligator populations have declined throughout the Greater Everg ...
... The American alligator once occupied all wetland habitats in south Florida, from freshwater marshes and swamps to mangrove estuaries. As development and watermanagement practices have reduced the quantity and quality of these habitats, alligator populations have declined throughout the Greater Everg ...
pdf
... 2. An experiment was conducted in forests and open scrubland at mid- and high elevations to explore: (a) the possibility of differential seed predation by rodents and granivorous ants; (b) the spatial variation, between and within habitats, in post-dispersal seed predation and predator abundance; an ...
... 2. An experiment was conducted in forests and open scrubland at mid- and high elevations to explore: (a) the possibility of differential seed predation by rodents and granivorous ants; (b) the spatial variation, between and within habitats, in post-dispersal seed predation and predator abundance; an ...
the ecological consequences of changes in biodiversity
... which increases resource retention, further increasing productivity. Finally, lower levels of available limiting resources at higher diversity are predicted to decrease the susceptibility of an ecosystem to invasion, supporting the diversity–invasibility hypothesis. This mechanism provides rules for ...
... which increases resource retention, further increasing productivity. Finally, lower levels of available limiting resources at higher diversity are predicted to decrease the susceptibility of an ecosystem to invasion, supporting the diversity–invasibility hypothesis. This mechanism provides rules for ...
Functional traits of woody plants: correspondence of species
... The English species were from within a 25 km radius around Sheffield (53∞20' N, 1∞50' W) at altitudes between 50 and 350 m a.s.l. Here, mean annual rainfall ranges between ca. 600-1200 mm, distributed throughout the year but with a winter maximum. Mean annual temperature is ca. 10 ºC, while frost ma ...
... The English species were from within a 25 km radius around Sheffield (53∞20' N, 1∞50' W) at altitudes between 50 and 350 m a.s.l. Here, mean annual rainfall ranges between ca. 600-1200 mm, distributed throughout the year but with a winter maximum. Mean annual temperature is ca. 10 ºC, while frost ma ...
Slide 1
... – 1,000 to 2,200 Km2 area needed to sustain a non-migratory cougar population for 100 years with 98% certainty (Beier, P. 1993. Determining minimum habitat areas and habitat corridors for cougars. Conservation Biology 7: 94-108) – Immigrants may comprise up to 50% of annual recruitment in subpopulat ...
... – 1,000 to 2,200 Km2 area needed to sustain a non-migratory cougar population for 100 years with 98% certainty (Beier, P. 1993. Determining minimum habitat areas and habitat corridors for cougars. Conservation Biology 7: 94-108) – Immigrants may comprise up to 50% of annual recruitment in subpopulat ...
Grasslands, Shrublands, Deserts
... that bring rainfall from the North American prairies. Winters in temperate grasslands are usually severe, with freezing temperatures and howling winds. While temperate perennial grasses regenerate from dormancy each spring by sprouting from their roots, grasses in the tropics do not enter a dormancy ...
... that bring rainfall from the North American prairies. Winters in temperate grasslands are usually severe, with freezing temperatures and howling winds. While temperate perennial grasses regenerate from dormancy each spring by sprouting from their roots, grasses in the tropics do not enter a dormancy ...
Section 1.1 Silence of the Frogs
... threatening parasitic disease. Cases of malaria have increased in ...
... threatening parasitic disease. Cases of malaria have increased in ...
Tidal power and the aquatic environment of La Rance
... Catadromous eels (Anguilla anguilla, Conger conger) enter as larvae and leave to breed. Not less than 30 fish species are confirmed breeders in the area. Studies on the biology of many species of fish (Le Mao, 1985), suggest that the reproduction and growth of organisms within the basin have not bee ...
... Catadromous eels (Anguilla anguilla, Conger conger) enter as larvae and leave to breed. Not less than 30 fish species are confirmed breeders in the area. Studies on the biology of many species of fish (Le Mao, 1985), suggest that the reproduction and growth of organisms within the basin have not bee ...
Sagebrush Birds - Point Blue Conservation Science
... grasses, displacing native wildlife. Where fires have become very frequent, they prevent the shrubs from returning, making this conversion to non-native grassland permanent. In other areas, suppression of wildfires allows juniper and pinyon trees to invade. When woodland habitat is established, unde ...
... grasses, displacing native wildlife. Where fires have become very frequent, they prevent the shrubs from returning, making this conversion to non-native grassland permanent. In other areas, suppression of wildfires allows juniper and pinyon trees to invade. When woodland habitat is established, unde ...
ENVIRONMENTAL RISK MANAGEMENT AUTHORITY DECISION
... from other Asteroideae tribes were selected for the New Zealand host specificity testing. The results of this field test add to the evidence, collected from field observations in South Africa and host specificity testing conducted for Australia, that the boneseed leafroller is expected to feed only ...
... from other Asteroideae tribes were selected for the New Zealand host specificity testing. The results of this field test add to the evidence, collected from field observations in South Africa and host specificity testing conducted for Australia, that the boneseed leafroller is expected to feed only ...
Australian Society for Kangaroos - Commissioner for Sustainability
... Lethal control programs in regard to kangaroos, is known to be a cruel, simplistic and unnecessary response to complex ecological and often political situations. Historically, starvation has been used to justify large-scale slaughter of remnant kangaroo populations, however when investigated, it is ...
... Lethal control programs in regard to kangaroos, is known to be a cruel, simplistic and unnecessary response to complex ecological and often political situations. Historically, starvation has been used to justify large-scale slaughter of remnant kangaroo populations, however when investigated, it is ...
Ch 9 Wildlife Biology Management
... • Situation in which plant or animal that lives in, on, or with another but does not help or harm it • Example – vultures waiting to feed on leftovers from a cougar’s kill ...
... • Situation in which plant or animal that lives in, on, or with another but does not help or harm it • Example – vultures waiting to feed on leftovers from a cougar’s kill ...
Part I: chapters, but I will cover them rapidly. The outlines will be
... Work through Figure 53.2, doing the math to make sure you get the same answer as the text. Note and understand what the letters of the formula mean. Next, try the following problem. A population ecologist wished to determine the size of a population of white-footed deer mice, Peromyscus leucopus, in ...
... Work through Figure 53.2, doing the math to make sure you get the same answer as the text. Note and understand what the letters of the formula mean. Next, try the following problem. A population ecologist wished to determine the size of a population of white-footed deer mice, Peromyscus leucopus, in ...
Vegetation succession in old fields at broad landscape scales
... themselves. This implies internal the importance of forces and mechanisms such as competition, shade generation and soil modification (Glenn-Lewin et al. 1992). In allogenic succession, the changes are brought about by external factors. Long-term vegetation responses to climatic change or river delt ...
... themselves. This implies internal the importance of forces and mechanisms such as competition, shade generation and soil modification (Glenn-Lewin et al. 1992). In allogenic succession, the changes are brought about by external factors. Long-term vegetation responses to climatic change or river delt ...
Developing Biodiversity Indicators for Los Angeles County
... unique challenges in assessing urban areas. In urban areas, human attitudes and preferences towards species traits may be the primary factors in determining species composition, rather than the traditional factors of species competition and other biotic interactions (Jenerette, 2013). For example ...
... unique challenges in assessing urban areas. In urban areas, human attitudes and preferences towards species traits may be the primary factors in determining species composition, rather than the traditional factors of species competition and other biotic interactions (Jenerette, 2013). For example ...
Biological Dynamics of Forest Fragments Project
The Biological Dynamics of Forest Fragments Project, originally called the Minimum Critical Size of Ecosystems Project is a large-scale ecological experiment looking at the effects of habitat fragmentation on tropical rainforest; it is one of the most expensive biology experiments ever run. The experiment, which was established in 1979 is located near Manaus, in the Brazilian Amazon. The project is jointly managed by the Smithsonian Institution and INPA, the Brazilian Institute for Research in the Amazon.The project was initiated in 1979 by Thomas Lovejoy to investigate the SLOSS debate. Initially named the Minimum Critical Size of Ecosystems Project, the project created forest fragments of sizes 1 hectare (2 acres), 10 hectares (25 acres), and 100 hectares (247 acres). Data were collected prior to the creation of the fragments and studies of the effects of fragmentation now exceed 25 years.As of October 2010 562 publications and 143 graduate dissertations and theses had emerged from the project.