TOXIC HYDROGEN SULFIDE AND DARK CAVES: PHENOTYPIC
... light, whereas the rearmost cave chambers are completely dark. The cave is drained by a creek fed by a number of springs throughout the cave, most of which contain high levels of dissolved H 2 S (Tobler et al. 2006). Poecilia mexicana occur throughout the cave, and for this study they were collected ...
... light, whereas the rearmost cave chambers are completely dark. The cave is drained by a creek fed by a number of springs throughout the cave, most of which contain high levels of dissolved H 2 S (Tobler et al. 2006). Poecilia mexicana occur throughout the cave, and for this study they were collected ...
Grades K-2 Biodiversity 1. What is a group of organisms that can
... 10. A scientist found 163 beetle species on one species of tropical tree. If that pattern holds, how many beetle species would you find in five different species of trees? A. 815 B. 163 C. 33 CORRECT: A, A ...
... 10. A scientist found 163 beetle species on one species of tropical tree. If that pattern holds, how many beetle species would you find in five different species of trees? A. 815 B. 163 C. 33 CORRECT: A, A ...
MACRO-INVERTEBRATE FUNCTIONAL GROUPS IN
... compared to lake ecosystems). Since the benthic environment functions as the major storage and recycling compartment for virtually all material that flows in the aquatic system, biological processes that take place there are interesting models for identification of the different invertebrate functio ...
... compared to lake ecosystems). Since the benthic environment functions as the major storage and recycling compartment for virtually all material that flows in the aquatic system, biological processes that take place there are interesting models for identification of the different invertebrate functio ...
PDF, 2241 KB - URPP GCB
... Leveraging multisite monitoring networks for global change research. ........................................ 27 Recent dynamics of Arctic Tundra vegetation communities and their implications for earth system processes. ................................................................................ ...
... Leveraging multisite monitoring networks for global change research. ........................................ 27 Recent dynamics of Arctic Tundra vegetation communities and their implications for earth system processes. ................................................................................ ...
Detailed Final Report - Rufford Small Grants
... The relation between the Great Snipe and human activities is not exclusively negative. As the species needs open fertile areas for breeding, some types of agricultural activity seem to facilitate breeding condition (e.g. grazing of floodplain meadows). At the same time agricultural activity may incr ...
... The relation between the Great Snipe and human activities is not exclusively negative. As the species needs open fertile areas for breeding, some types of agricultural activity seem to facilitate breeding condition (e.g. grazing of floodplain meadows). At the same time agricultural activity may incr ...
Parks Conservation and Lands - Commissioner for Sustainability
... having major effects on kangaroo abundance (Caughley et al. 1980, Shepherd 1981, Thompson 1992) and have on occasions even extirpated entire populations of eastern grey kangaroos (Robertshaw and Harden 1989). Thylacines and Tasmanian Devils may well have had a similar effect prior to the arrival of ...
... having major effects on kangaroo abundance (Caughley et al. 1980, Shepherd 1981, Thompson 1992) and have on occasions even extirpated entire populations of eastern grey kangaroos (Robertshaw and Harden 1989). Thylacines and Tasmanian Devils may well have had a similar effect prior to the arrival of ...
Succession
... succession. As they grow they create _____________________. Shade-loving plants, such as mountain laurel, grow and create even more shade. The increased shade creates a lack of _________________________ for the sunloving plants. Because of the shade, the sun-loving plants fail to _______________ ...
... succession. As they grow they create _____________________. Shade-loving plants, such as mountain laurel, grow and create even more shade. The increased shade creates a lack of _________________________ for the sunloving plants. Because of the shade, the sun-loving plants fail to _______________ ...
SED221 - National Open University of Nigeria
... systematic study of how organisms interact with one another and with their physical and chemical environment. Ecological interactions start within and between populations and they extend on through communities, ecosystem and the biosphere. In this unit, emphasis is on population ecology, its charact ...
... systematic study of how organisms interact with one another and with their physical and chemical environment. Ecological interactions start within and between populations and they extend on through communities, ecosystem and the biosphere. In this unit, emphasis is on population ecology, its charact ...
The Conservation and Ecology of Carnivorous Plants
... remain unanswered. Unfortunately, at the present time, many carnivorous plants are increasingly threatened by anthropogenic activities. Indeed, over half of the carnivorous plant species assessed by the International Union for the Conservation of Nature (IUCN) are listed as ‘threatened’, but the thr ...
... remain unanswered. Unfortunately, at the present time, many carnivorous plants are increasingly threatened by anthropogenic activities. Indeed, over half of the carnivorous plant species assessed by the International Union for the Conservation of Nature (IUCN) are listed as ‘threatened’, but the thr ...
Allee Effects, Immigration, and the Evolution of Species` Niches
... requires consideration of the stochastic processes of mutation, drift, and demographic stochasticity. Gomulkiewicz et al. (1999) examined in detail the interplay of selection and these stochastic processes for the case of a single diploid locus, assuming negative density dependence, and observed tha ...
... requires consideration of the stochastic processes of mutation, drift, and demographic stochasticity. Gomulkiewicz et al. (1999) examined in detail the interplay of selection and these stochastic processes for the case of a single diploid locus, assuming negative density dependence, and observed tha ...
Allee Effects, Immigration, and the Evolution of Species
... requires consideration of the stochastic processes of mutation, drift, and demographic stochasticity. Gomulkiewicz et al. (1999) examined in detail the interplay of selection and these stochastic processes for the case of a single diploid locus, assuming negative density dependence, and observed tha ...
... requires consideration of the stochastic processes of mutation, drift, and demographic stochasticity. Gomulkiewicz et al. (1999) examined in detail the interplay of selection and these stochastic processes for the case of a single diploid locus, assuming negative density dependence, and observed tha ...
15 Sea Grass Beds, Kelp Forests, Rocky Reefs, and Coral Reefs
... • When kelp abundant, dominant California red sea urchin* hides in crevices feeding upon drift algae. Grazing on attached seaweeds not a factor, so even though urchins are abundant, kelps maintain dominance • When kelps not abundant, urchins rove around and graze down new kelp plants, maintaining a ...
... • When kelp abundant, dominant California red sea urchin* hides in crevices feeding upon drift algae. Grazing on attached seaweeds not a factor, so even though urchins are abundant, kelps maintain dominance • When kelps not abundant, urchins rove around and graze down new kelp plants, maintaining a ...
Root competition can cause a decline in diversity with increased
... experience intraspecific interactions. However, the hypotheses we test and our experiment focus on the effects of interspecific competition on the community.) The community with both root and shoot competition was simply a mixture of the seven species in a single plot (Fig. 1, bottom). The communiti ...
... experience intraspecific interactions. However, the hypotheses we test and our experiment focus on the effects of interspecific competition on the community.) The community with both root and shoot competition was simply a mixture of the seven species in a single plot (Fig. 1, bottom). The communiti ...
Journal of Chemical, Biological and Physical Sciences Stored
... production4. Although the area covered by mangrove ecosystems represents only a small fraction of tropical forests, their position at the terrestrial-ocean interface and potential exchange with coastal water suggests these forests make a unique contribution to carbon biogeochemistry in coastal ocean ...
... production4. Although the area covered by mangrove ecosystems represents only a small fraction of tropical forests, their position at the terrestrial-ocean interface and potential exchange with coastal water suggests these forests make a unique contribution to carbon biogeochemistry in coastal ocean ...
What Makes an Ecological Icon? Symposia
... other papers on intertidal biology were widely cited. In modern times, he is better remembered for his ar‑ chaeological research in the desert southwest (Miller 1991). His work on intertidal food webs, however, is generally forgotten Colton’s work is particularly intriguing because his food web lack ...
... other papers on intertidal biology were widely cited. In modern times, he is better remembered for his ar‑ chaeological research in the desert southwest (Miller 1991). His work on intertidal food webs, however, is generally forgotten Colton’s work is particularly intriguing because his food web lack ...
2009 Ripples continental shelf
... suitable living conditions (often species specific) in some areas but not others (Chapman, 1994; Underwood et al., 2000). Indirect effects include interactions among individuals or species (Menge et al., 1985; Fairweather, 1988). It is well known that the scale of sampling, relative to the distributi ...
... suitable living conditions (often species specific) in some areas but not others (Chapman, 1994; Underwood et al., 2000). Indirect effects include interactions among individuals or species (Menge et al., 1985; Fairweather, 1988). It is well known that the scale of sampling, relative to the distributi ...
Introduction - A New Development @ Chavoux.com
... tends to become equal for whatever reason. If a grazing system is considered (Figure 2), this can be on any point along a continuum until the vegetation quality or quantity of the environment in which the population lives becomes the limiting factor at the ecological carrying capacity. Depending on ...
... tends to become equal for whatever reason. If a grazing system is considered (Figure 2), this can be on any point along a continuum until the vegetation quality or quantity of the environment in which the population lives becomes the limiting factor at the ecological carrying capacity. Depending on ...
Swainson`s Hawk (Buteo swainsoni)
... Breeding density is influenced by availability of nest trees and land use. High densities of breeding birds are associated with alfalfa fields, while low densities are associated with irrigated pasture and weedy fields ...
... Breeding density is influenced by availability of nest trees and land use. High densities of breeding birds are associated with alfalfa fields, while low densities are associated with irrigated pasture and weedy fields ...
Conservation and Subsistence in Small
... have strong attachments to homelands. But this does not necessarily mean that they have continuously occupied a single spot on the planet and made it home for hundreds of generations. A case in point is provided by the first peoples of North America. An examination of the distribution of Native Nort ...
... have strong attachments to homelands. But this does not necessarily mean that they have continuously occupied a single spot on the planet and made it home for hundreds of generations. A case in point is provided by the first peoples of North America. An examination of the distribution of Native Nort ...
Benchmarking novel approaches for modelling species range
... species’ range dynamics has never been compared systematically. The lack of such evaluation is likely due to the difficulty to get appropriate benchmark data, consisting of information on distribution, abundance and demography. Such complex datasets are rare and benchmarking may be hampered if not a ...
... species’ range dynamics has never been compared systematically. The lack of such evaluation is likely due to the difficulty to get appropriate benchmark data, consisting of information on distribution, abundance and demography. Such complex datasets are rare and benchmarking may be hampered if not a ...
Effects of grazing and prescribed fire on resource selection and nest
... grazed by bison or cattle, (ii) years since burn or the short-term effects of fire management (0 vs. C1 years), and (iii) frequency of experimental burn or the longterm fire management (annual burns vs. fire return intervals of C2 years, Fig. 1). Two additional variables described the landscape in t ...
... grazed by bison or cattle, (ii) years since burn or the short-term effects of fire management (0 vs. C1 years), and (iii) frequency of experimental burn or the longterm fire management (annual burns vs. fire return intervals of C2 years, Fig. 1). Two additional variables described the landscape in t ...
Oak Savanna Restoration - The Wildlife Society
... on the property, but in recent years has been working with the Iowa DNR to restore prairie and savanna,to improve habitat for the resident population of timber rattlesnakes (and big whitetail bucks). While touring the management projects at Capoli, Raleigh spoke of his decades of experience on the r ...
... on the property, but in recent years has been working with the Iowa DNR to restore prairie and savanna,to improve habitat for the resident population of timber rattlesnakes (and big whitetail bucks). While touring the management projects at Capoli, Raleigh spoke of his decades of experience on the r ...
A perspective on amphibian conservation in the United States
... with birds and mammals, having few keystone or umbrella species, the lack of broadscale, long-term commitment from resource agencies, and, probably, politics at all levels. Fundamentally, it is essential to realize that in a free market society, amphibians are not deemed vital simply because they ca ...
... with birds and mammals, having few keystone or umbrella species, the lack of broadscale, long-term commitment from resource agencies, and, probably, politics at all levels. Fundamentally, it is essential to realize that in a free market society, amphibians are not deemed vital simply because they ca ...
Predicting Changes in Community Composition and Ecosystem
... 1. The concept of plant functional type proposes that species can be grouped according to common responses to the environment and/or common effects on ecosystem processes. However, the knowledge of relationships between traits associated with the response of plants to environmental factors such as r ...
... 1. The concept of plant functional type proposes that species can be grouped according to common responses to the environment and/or common effects on ecosystem processes. However, the knowledge of relationships between traits associated with the response of plants to environmental factors such as r ...
Guidance for Restoration Activities in Riparian Areas
... Willow, cottonwood and red osier dogwood have the additional advantage of readily rooting from cuttings or ‘whips’. These can be harvested locally at much less expense than purchasing potted stock. Local seed sources are always preferable, as the plants will be well adapted to site conditions. For ...
... Willow, cottonwood and red osier dogwood have the additional advantage of readily rooting from cuttings or ‘whips’. These can be harvested locally at much less expense than purchasing potted stock. Local seed sources are always preferable, as the plants will be well adapted to site conditions. For ...
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.