
Beyond demography and delisting: ecological recovery for
... geographically? (2) Does predator-directed aggressiveness vary by population? (3) Is frequency of departure from local feeding sites by moose consistent with patterns in the above two questions? And, (4) Do females that have lost young to predators display greater within-population responses to olfa ...
... geographically? (2) Does predator-directed aggressiveness vary by population? (3) Is frequency of departure from local feeding sites by moose consistent with patterns in the above two questions? And, (4) Do females that have lost young to predators display greater within-population responses to olfa ...
Special Feature - Cedar Creek Ecosystem Science Reserve
... the matrix of biotic interactions among species (Levins 1968, May 1974), e is the vector of abiotic environmental conditions, and A is a variance–covariance matrix of abiotic conditions. I use a variance–covariance matrix for abiotic factors because abiotic conditions, such as temperature, precipita ...
... the matrix of biotic interactions among species (Levins 1968, May 1974), e is the vector of abiotic environmental conditions, and A is a variance–covariance matrix of abiotic conditions. I use a variance–covariance matrix for abiotic factors because abiotic conditions, such as temperature, precipita ...
microbial diversity and global environmental issues
... variability among living organisms from all sources including, inter alia, terrestrial, marine, and other aquatic ecosystems and the ecological complexes of which they are part” (UNEP, 1992). For those concerned with quantitative assessments of biological diversity, the key issue in the CBD definiti ...
... variability among living organisms from all sources including, inter alia, terrestrial, marine, and other aquatic ecosystems and the ecological complexes of which they are part” (UNEP, 1992). For those concerned with quantitative assessments of biological diversity, the key issue in the CBD definiti ...
7.0 TERRESTRIAL ENVIRONMENT .........................................................
... terrestrial environmental components identified in the Guidelines (Section 6.3) form the basis for the assessment of the Project’s predicted effects and impacts on the environment. Where existing available terrestrial information did not exist or was insufficient, field studies were initiated to add ...
... terrestrial environmental components identified in the Guidelines (Section 6.3) form the basis for the assessment of the Project’s predicted effects and impacts on the environment. Where existing available terrestrial information did not exist or was insufficient, field studies were initiated to add ...
Pitfall Trapping as a Method for Studying Populations of Carabidae
... pattern of distribution in populations, the relative numbers of a species in differentvegetation types, in describing the Carabid fauna of habitats, and in work on daily rhythms of activity (Hikimiuk 1948; van der Drift 1951; Scherney 1955, 1960; Gilbert 1956; 1958; Dawson 1957; Kabacik 1957; Skuhra ...
... pattern of distribution in populations, the relative numbers of a species in differentvegetation types, in describing the Carabid fauna of habitats, and in work on daily rhythms of activity (Hikimiuk 1948; van der Drift 1951; Scherney 1955, 1960; Gilbert 1956; 1958; Dawson 1957; Kabacik 1957; Skuhra ...
WRITTEN SUMMARY OF THE DEPARTMENT OF WATER RESOURCES
... been increasing substantially (Figure 1; Jassby 2008), potentially an issue for the downstream food web (Wilkerson et al. 2006; Dugdale et al. 2007). Specifically, primary production is relatively low in the San Francisco estuary, which in turn is thought to reduce fisheries yields (Figure 2). Moreo ...
... been increasing substantially (Figure 1; Jassby 2008), potentially an issue for the downstream food web (Wilkerson et al. 2006; Dugdale et al. 2007). Specifically, primary production is relatively low in the San Francisco estuary, which in turn is thought to reduce fisheries yields (Figure 2). Moreo ...
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... The outer layer of the planet Earth can be divided into several compartments: the hydrosphere (or sphere of water), the lithosphere (or sphere of soils and rocks), and the atmosphere (or sphere of the air). The biosphere (or sphere of life), sometimes described as "the fourth envelope", is all livin ...
... The outer layer of the planet Earth can be divided into several compartments: the hydrosphere (or sphere of water), the lithosphere (or sphere of soils and rocks), and the atmosphere (or sphere of the air). The biosphere (or sphere of life), sometimes described as "the fourth envelope", is all livin ...
Our Natural Heritage, Bioregional Pride
... In the curriculum we refer to four ecological regions and their corresponding ecosystems. The names of these ecosystems are based on their vegetative communities, for instance, chaparral. However, an ecosystem is made up of all biotic and abiotic elements and their interactions. In other words, when ...
... In the curriculum we refer to four ecological regions and their corresponding ecosystems. The names of these ecosystems are based on their vegetative communities, for instance, chaparral. However, an ecosystem is made up of all biotic and abiotic elements and their interactions. In other words, when ...
Dry Sand Prairie - Michigan Natural Features Inventory
... 1992, Timmins 1992, Laubhan 1995, Warners 1997). While this discussion has focused on plants it is important to note that these species serve as host plants for a variety of insects and the structure of open grasslands is critical to a wide variety of animal species, many of which are considered rar ...
... 1992, Timmins 1992, Laubhan 1995, Warners 1997). While this discussion has focused on plants it is important to note that these species serve as host plants for a variety of insects and the structure of open grasslands is critical to a wide variety of animal species, many of which are considered rar ...
Stony Rises Landholder Guide
... Fire has shaped many of Australia’s vegetation communities. While the Stony Rises is not as dependant on fire to regenerate as other landscapes, there is a marked increase in diversity of plant species that have grown after recent fires. Burning patterns need to resemble different ages (or mosaics) ...
... Fire has shaped many of Australia’s vegetation communities. While the Stony Rises is not as dependant on fire to regenerate as other landscapes, there is a marked increase in diversity of plant species that have grown after recent fires. Burning patterns need to resemble different ages (or mosaics) ...
Migratory Animals Couple Biodiversity and Ecosystem Functioning
... biodiversity that is intimately embedded within resident communities. We review examples from across the animal kingdom to distill fundamental processes by which migratory animals influence communities and ecosystems, demonstrating that they can uniquely alter energy flow, food-web topology and stab ...
... biodiversity that is intimately embedded within resident communities. We review examples from across the animal kingdom to distill fundamental processes by which migratory animals influence communities and ecosystems, demonstrating that they can uniquely alter energy flow, food-web topology and stab ...
Competitive abilities of introduced and native grasses
... Best (1987) for all other taxa). The region has a con tinental climate with average temperatures of - 7 °C in January and 27°C in July . The average annual pre cipitation is 313 nun, 46% of which occurs from May through July (Environment Canada 1966--1993). Mean temperatures and precipitation leve ...
... Best (1987) for all other taxa). The region has a con tinental climate with average temperatures of - 7 °C in January and 27°C in July . The average annual pre cipitation is 313 nun, 46% of which occurs from May through July (Environment Canada 1966--1993). Mean temperatures and precipitation leve ...
Full Issue, Vol. 65 No. 2 - BYU ScholarsArchive
... rivulets where trickling water passes through alkali-encrusted soil. This area is conspicuous due to the lack of vegetation and to the alkali encrustations that make the soil covering completely white (Fig. 2), creating blinding reflections during periods of sunlight. At this location C. a. amargosa ...
... rivulets where trickling water passes through alkali-encrusted soil. This area is conspicuous due to the lack of vegetation and to the alkali encrustations that make the soil covering completely white (Fig. 2), creating blinding reflections during periods of sunlight. At this location C. a. amargosa ...
Use of precise spatial data for describing spatial patterns and plant
... As a result of the link between spatial patterns and ecological processes, studies of plant patterns have often been conducted under the assumption that the results of pattern analysis can give information on the predominant ecological processes in these communities. In this context, it is important ...
... As a result of the link between spatial patterns and ecological processes, studies of plant patterns have often been conducted under the assumption that the results of pattern analysis can give information on the predominant ecological processes in these communities. In this context, it is important ...
Evolution in plant populations as a driver of ecological changes in
... diversity of large arthropod assemblages associated with plants. This approach involves experimentally testing a series of necessary conditions of the hypothesis. Although our data are limited to the study of plant–arthropod interactions, we believe that this approach can be applied to any system in ...
... diversity of large arthropod assemblages associated with plants. This approach involves experimentally testing a series of necessary conditions of the hypothesis. Although our data are limited to the study of plant–arthropod interactions, we believe that this approach can be applied to any system in ...
Biotic resistance and facilitation of a non
... across habitats. I studied the effects of native species on this invader across a range of environmental contexts where it is common (mid-intertidal zone, low wave exposure) vs. where it is rare (low intertidal zone, high wave exposure) in Barkley Sound, Vancouver Island, Canada. I carried out facto ...
... across habitats. I studied the effects of native species on this invader across a range of environmental contexts where it is common (mid-intertidal zone, low wave exposure) vs. where it is rare (low intertidal zone, high wave exposure) in Barkley Sound, Vancouver Island, Canada. I carried out facto ...
Biotic and abiotic factors constraining the distribution and
... axes. Pelliciera rhizophorae is a Neotropical mangrove with a narrow geographical range, specialized habitat, and generally sparse local abundance. I chose to study this species because it is an example of the rarest of the rare, and before I started this work, very little was known about the curren ...
... axes. Pelliciera rhizophorae is a Neotropical mangrove with a narrow geographical range, specialized habitat, and generally sparse local abundance. I chose to study this species because it is an example of the rarest of the rare, and before I started this work, very little was known about the curren ...
O papel do fogo na estruturação funcional e filogenética de savanas
... mechanisms they operate? To answer these questions we collected field data on plant traits measured at the individual level, soil and topographic information in Emas National Park (central Brazil) and obtained fire history information from remote sensing data. We used such data to test specific mode ...
... mechanisms they operate? To answer these questions we collected field data on plant traits measured at the individual level, soil and topographic information in Emas National Park (central Brazil) and obtained fire history information from remote sensing data. We used such data to test specific mode ...
Diet choice in an omnivorous salt-marsh crab: different food types
... prey defenses or environmental constraints limit crabs from consuming certain animal prey? Fourth, does sex or body size affect diet? For tractability, we began by examining these questions in the laboratory; however, fully understanding feeding patterns will ultimately require field experiments tha ...
... prey defenses or environmental constraints limit crabs from consuming certain animal prey? Fourth, does sex or body size affect diet? For tractability, we began by examining these questions in the laboratory; however, fully understanding feeding patterns will ultimately require field experiments tha ...
Johnson habitat quality
... Abstract. Understanding habitat quality for wildlife is extremely important for biologists, but few papers have explored the pros and cons of how to measure it. In this review, I clarify terminology and distinguish habitat quality from related terms, differentiate habitat quality from animals’ and w ...
... Abstract. Understanding habitat quality for wildlife is extremely important for biologists, but few papers have explored the pros and cons of how to measure it. In this review, I clarify terminology and distinguish habitat quality from related terms, differentiate habitat quality from animals’ and w ...
Evolution in plant populations as a driver of
... diversity of large arthropod assemblages associated with plants. This approach involves experimentally testing a series of necessary conditions of the hypothesis. Although our data are limited to the study of plant–arthropod interactions, we believe that this approach can be applied to any system in ...
... diversity of large arthropod assemblages associated with plants. This approach involves experimentally testing a series of necessary conditions of the hypothesis. Although our data are limited to the study of plant–arthropod interactions, we believe that this approach can be applied to any system in ...
New Policies for Old Trees: Averting a Global
... Drivers of large old tree loss can interact (Figure 3). Examples include: (1) the combined impacts of fire and browsing by herbivores (Shannon et al. 2011), (2) the interaction of fire and fire-prone exotic plants (Setterfield et al. 2005), (3) the interaction between fire, beetle attack, and tree a ...
... Drivers of large old tree loss can interact (Figure 3). Examples include: (1) the combined impacts of fire and browsing by herbivores (Shannon et al. 2011), (2) the interaction of fire and fire-prone exotic plants (Setterfield et al. 2005), (3) the interaction between fire, beetle attack, and tree a ...
Transdisciplinary Wildlife Management
... Corresponding Nordic organizations were founded and still running in many research fields, such as forestry and agriculture. Increasing networking and exchanging of knowledge between the variety of disciplines and in the science-management interface were acknowledged as essential parts of doing scie ...
... Corresponding Nordic organizations were founded and still running in many research fields, such as forestry and agriculture. Increasing networking and exchanging of knowledge between the variety of disciplines and in the science-management interface were acknowledged as essential parts of doing scie ...
assessment
... Justification: The species is known only from one 500 m reach of a small stream. The estimated area of occupancy (AOO) is less than 1 km² and the estimated population in 2005 was <1,000 individuals. There has been an estimated reduction of more than 80% in extent of occurrence (EOO) over the last th ...
... Justification: The species is known only from one 500 m reach of a small stream. The estimated area of occupancy (AOO) is less than 1 km² and the estimated population in 2005 was <1,000 individuals. There has been an estimated reduction of more than 80% in extent of occurrence (EOO) over the last th ...
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.