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... 7. A crucial argument made by promoters of biodiversity conservation is that there are many undiscovered ____________________ that have potential value to humans and that are primarily located in areas being subjected to habitat destruction. ANS: species DIF: 1 ...
... 7. A crucial argument made by promoters of biodiversity conservation is that there are many undiscovered ____________________ that have potential value to humans and that are primarily located in areas being subjected to habitat destruction. ANS: species DIF: 1 ...
Trait differences between grass species along a climatic
... Understanding how plant morphology and physiology change under different environmental conditions could reflect the existence of trends in traits specialization and provide indirect evidence on the variation of ecosystem level processes. For example, differences between plants related to leaf size, ...
... Understanding how plant morphology and physiology change under different environmental conditions could reflect the existence of trends in traits specialization and provide indirect evidence on the variation of ecosystem level processes. For example, differences between plants related to leaf size, ...
4H Science Toolkit - Lost Ladybug Project
... 5. There are two ladybugs (one of each species) with a recruitment rate of one each. So, 2 + 2 = 4 ladybugs (2 of each species) in Generation 2 (cell #H5). 6. There is one aphid with a recruitment rate of 4. So 1 + 4 = 5 aphids in Generation 2. 7. There are 3 plants with recruitment rates of 2. So, ...
... 5. There are two ladybugs (one of each species) with a recruitment rate of one each. So, 2 + 2 = 4 ladybugs (2 of each species) in Generation 2 (cell #H5). 6. There is one aphid with a recruitment rate of 4. So 1 + 4 = 5 aphids in Generation 2. 7. There are 3 plants with recruitment rates of 2. So, ...
Significance and extent of secondary seed dispersal by predatory
... easy to infer the actual role of kestrels based on the captivity experiments of Padilla & Nogales (2009), showing that 89% of seeds remain inside the lizard guts after kestrel predation. Thus, these seeds have been secondarily dispersed, because they carry the lizards to their perches to handle and ...
... easy to infer the actual role of kestrels based on the captivity experiments of Padilla & Nogales (2009), showing that 89% of seeds remain inside the lizard guts after kestrel predation. Thus, these seeds have been secondarily dispersed, because they carry the lizards to their perches to handle and ...
Nevada Wildlife Action Plan - Nevada Department of Wildlife
... sandy or gravelly and are often easy to dig. Blow sand tends to accumulate around the shrubby bases of the saltbushes, particularly shadscale. This creates hummocks of soil that lend themselves to burrowing and denning. The two most dependable herbivorous food staples are ricegrass and shadscale see ...
... sandy or gravelly and are often easy to dig. Blow sand tends to accumulate around the shrubby bases of the saltbushes, particularly shadscale. This creates hummocks of soil that lend themselves to burrowing and denning. The two most dependable herbivorous food staples are ricegrass and shadscale see ...
The concept of overgrazing and its role in management of
... cies, the term overgrazing implies grazing above a level at which other aspects of biodiversity is threatened, i.e., when grazing is in conflict with conservation efforts. Sometimes nature conservationists have a more narrow focus. For example, an extensive report about grazing and overgrazing in S ...
... cies, the term overgrazing implies grazing above a level at which other aspects of biodiversity is threatened, i.e., when grazing is in conflict with conservation efforts. Sometimes nature conservationists have a more narrow focus. For example, an extensive report about grazing and overgrazing in S ...
Invasion in a heterogeneous world: resistance, coexistence or
... measure of impact at the community level is change in community membership, especially extinction of native species (e.g. number of native species driven to extinction). While it is easy to verify extinction in models, it can be problematic in empirical studies, and care must be taken to specify the ...
... measure of impact at the community level is change in community membership, especially extinction of native species (e.g. number of native species driven to extinction). While it is easy to verify extinction in models, it can be problematic in empirical studies, and care must be taken to specify the ...
The Mechanistic Approach of `The Theory of Island Biogeography
... paleontologist and most biogeographers tend to be history oriented. The historian often pays attention to differences between phenomena, since this may shed light on history. By contrast, the “machinery person” is more focused on similarities among phenomena, because these reveal regularities (MacAr ...
... paleontologist and most biogeographers tend to be history oriented. The historian often pays attention to differences between phenomena, since this may shed light on history. By contrast, the “machinery person” is more focused on similarities among phenomena, because these reveal regularities (MacAr ...
keeping options alive - World Resources Report
... definition of conservation, modelled after that used in the World Conservation Strategy (WCS) (IUCN 1980), emphasizes that how people use species, manage the land, and invest in development will determine the ultimate success of biodiversity conservation. To many, the word "conservation" has a narro ...
... definition of conservation, modelled after that used in the World Conservation Strategy (WCS) (IUCN 1980), emphasizes that how people use species, manage the land, and invest in development will determine the ultimate success of biodiversity conservation. To many, the word "conservation" has a narro ...
NYNHP Conservation Guide for Inland Silverside
... stronger preference for low salinity waters. They can also be found in freshwater ponds, lakes, and reservoirs and have been introduced into some locations (Smith 1985, Weinstein 1986). Spawning habitat includes shallow fresh or brackish waters with an ample amount of dead leaves, tree roots, algal ...
... stronger preference for low salinity waters. They can also be found in freshwater ponds, lakes, and reservoirs and have been introduced into some locations (Smith 1985, Weinstein 1986). Spawning habitat includes shallow fresh or brackish waters with an ample amount of dead leaves, tree roots, algal ...
View PDF - CiteSeerX
... Gillon 1974). However, it was lower than reports elsewhere; e.g. natural Tennessee grassland, 56.5 m-2 (van Hook 1971); short grass prairie, Colorodo, 144.9 m-2 (Rotman & Capinera 1983); grassland community, Kurukshetra, 40.9 m-2 (Kaushal & Vats 1984a). On the contrary, the biomass (1295 mg m-2) was ...
... Gillon 1974). However, it was lower than reports elsewhere; e.g. natural Tennessee grassland, 56.5 m-2 (van Hook 1971); short grass prairie, Colorodo, 144.9 m-2 (Rotman & Capinera 1983); grassland community, Kurukshetra, 40.9 m-2 (Kaushal & Vats 1984a). On the contrary, the biomass (1295 mg m-2) was ...
Cross-scale Drivers of Natural Disturbances Prone to Anthropogenic
... through landscape levels. Eruptions occur when key thresholds are surpassed, prior constraints cease to exert influence, and positive feedbacks amplify across scales. These dynamics are bidirectional, as landscape features influence how lower-scale processes are amplified or buffered. Climate change ...
... through landscape levels. Eruptions occur when key thresholds are surpassed, prior constraints cease to exert influence, and positive feedbacks amplify across scales. These dynamics are bidirectional, as landscape features influence how lower-scale processes are amplified or buffered. Climate change ...
Assessment approach - The Department of State Development
... extent, quality and availability of relevant data, such as species distribution or the extent of ecological communities. Fortunately, Queensland has some of the best quality and most extensive biodiversity data within Australia. From vegetation communities, species habitat and aquatic ecosystems, th ...
... extent, quality and availability of relevant data, such as species distribution or the extent of ecological communities. Fortunately, Queensland has some of the best quality and most extensive biodiversity data within Australia. From vegetation communities, species habitat and aquatic ecosystems, th ...
Frontiers in research on biodiversity and disease
... that spatial scale might mediate the form of the diversity–disease relationship; while vertebrate diversity might inhibit transmission at fine scales (e.g. within forest patches), at broader spatial scales (e.g. the transition from urban to forested areas), some minimum amount of wildlife diversity ...
... that spatial scale might mediate the form of the diversity–disease relationship; while vertebrate diversity might inhibit transmission at fine scales (e.g. within forest patches), at broader spatial scales (e.g. the transition from urban to forested areas), some minimum amount of wildlife diversity ...
Taiga - FOSSweb
... This part of the Whiskey Jack Forest Management Area, Ontario, has been clear-cut for many years. After this type of logging the soil ...
... This part of the Whiskey Jack Forest Management Area, Ontario, has been clear-cut for many years. After this type of logging the soil ...
Using Livestock to Manage Wildlife Habitat
... To select the species and class (stocker, cow-calf, etc.) of livestock best suited for managing wildlife habitat, it is necessary to understand the diets of both livestock and the wildlife species being managed. When livestock have their choice of foods (grass, browse or forbs), cattle will eat most ...
... To select the species and class (stocker, cow-calf, etc.) of livestock best suited for managing wildlife habitat, it is necessary to understand the diets of both livestock and the wildlife species being managed. When livestock have their choice of foods (grass, browse or forbs), cattle will eat most ...
Rethinking Community Assembly through the Lens
... from occurring in local communities (e.g., species without frost tolerance may not occur in alpine communities), it does not adequately describe the dynamic response to or impact of plant species on limiting resources and consumers (Tilman 1982). Second, species interactions with co-occurring compet ...
... from occurring in local communities (e.g., species without frost tolerance may not occur in alpine communities), it does not adequately describe the dynamic response to or impact of plant species on limiting resources and consumers (Tilman 1982). Second, species interactions with co-occurring compet ...
Northern Harrier (Circus cyaneus): A Technical
... monitoring programs such as the Breeding Bird Survey. Nevertheless, historic and recent evidence suggest that the number of breeding harriers has declined across the species’ range. USDA Forest Service Region 2 represents a segment of the core of this species’ breeding range, and Breeding Bird Surve ...
... monitoring programs such as the Breeding Bird Survey. Nevertheless, historic and recent evidence suggest that the number of breeding harriers has declined across the species’ range. USDA Forest Service Region 2 represents a segment of the core of this species’ breeding range, and Breeding Bird Surve ...
Reciprocal facilitation and nonlinearity maintain habitat engineering
... importance for improved conservation and restoration of biogenic habitats. In addition, understanding the dynamics of the biotic response and consecutive impacts on habitat engineering is of primary importance for prioritizing management actions. Whereas many ecological inter actions such as compet ...
... importance for improved conservation and restoration of biogenic habitats. In addition, understanding the dynamics of the biotic response and consecutive impacts on habitat engineering is of primary importance for prioritizing management actions. Whereas many ecological inter actions such as compet ...
Effect of abiotic factors on reproduction in the centre and periphery
... relationship between weather and reproduction should be dissimilar for species which are in the centre of their breeding range and those that are near the edge. We tested this hypothesis on two sympatric ground-nesting raptors, the hen harrier Circus cyaneus and the Montagu’s harrier Circus pygargus ...
... relationship between weather and reproduction should be dissimilar for species which are in the centre of their breeding range and those that are near the edge. We tested this hypothesis on two sympatric ground-nesting raptors, the hen harrier Circus cyaneus and the Montagu’s harrier Circus pygargus ...
Mapping the distribution of dholes
... 13 parameters that enabled tiger and dholes to coexist, and partitioning of prey selection was identified as the top factor (Karanth and Sunquist 2000). Although prey partitioning may enable coexistence of tigers and dholes, interguild predation, i.e., direct predation of the smaller by the larger c ...
... 13 parameters that enabled tiger and dholes to coexist, and partitioning of prey selection was identified as the top factor (Karanth and Sunquist 2000). Although prey partitioning may enable coexistence of tigers and dholes, interguild predation, i.e., direct predation of the smaller by the larger c ...
Life 9e - Garvness
... 1. Which of the following statements about cheese skippers is true? a. Their presence can be used to estimate the time of death of a body. b. They are among the first species to arrive when a dead body starts decomposing. c. They prefer hair and nails to flesh. d. Both a and b e. Both a and c Answer ...
... 1. Which of the following statements about cheese skippers is true? a. Their presence can be used to estimate the time of death of a body. b. They are among the first species to arrive when a dead body starts decomposing. c. They prefer hair and nails to flesh. d. Both a and b e. Both a and c Answer ...
Mugger Crocodile Crocodylus palustris
... suitable habitats in Protected Areas of the Muggers’ former range are identified, surplus stock from these facilities can be used in reintroduction programs. Bangladesh and Bhutan are both candidates for this approach as well as several states in India. ...
... suitable habitats in Protected Areas of the Muggers’ former range are identified, surplus stock from these facilities can be used in reintroduction programs. Bangladesh and Bhutan are both candidates for this approach as well as several states in India. ...
Can the biomass-ratio hypothesis predict mixed
... true, i.e. when the ecosystem response (mixed-species litter decomposition) is not simply the effect contributed by each species weighted by its relative abundance, but when the differences between the observed effect and that predicted by the biomass-ratio hypothesis tend to cancel out more complet ...
... true, i.e. when the ecosystem response (mixed-species litter decomposition) is not simply the effect contributed by each species weighted by its relative abundance, but when the differences between the observed effect and that predicted by the biomass-ratio hypothesis tend to cancel out more complet ...
Environmental variation has stronger effects than plant genotype on
... with neighbouring plant species, and whether variation among Oenothera genotypes affected the performance of Bromus. We used 22 genetic families (hereafter genotypes) of Oenothera, which were grown in a common environment for one generation to reduce maternal effects. Seeds were collected from these ...
... with neighbouring plant species, and whether variation among Oenothera genotypes affected the performance of Bromus. We used 22 genetic families (hereafter genotypes) of Oenothera, which were grown in a common environment for one generation to reduce maternal effects. Seeds were collected from these ...
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.