Simple prediction of interaction strengths in complex food webs
... constrained trophic interactions. When tested against empirical data, deviations from purely trophic behavior in natural communities should elucidate the importance of nontrophic interactions and nonmetabolic processes on species abundances. The variables that predict interaction sign and magnitude ...
... constrained trophic interactions. When tested against empirical data, deviations from purely trophic behavior in natural communities should elucidate the importance of nontrophic interactions and nonmetabolic processes on species abundances. The variables that predict interaction sign and magnitude ...
Early 20th century
... relationship between organisms and their environment. He exposed the existing relationships between observed plant species and climate, and described vegetation zones using latitude and altitude, a discipline now known as geobotany. ...
... relationship between organisms and their environment. He exposed the existing relationships between observed plant species and climate, and described vegetation zones using latitude and altitude, a discipline now known as geobotany. ...
Ch55Test_File - Milan Area Schools
... production by the oak trees. If the mice prey on the larvae of the moths and the moth larvae eat the leaves of the oak, how can this be so? a. Gypsy moths do not influence acorn production. b. An increase in the mouse population leads to a decrease in the gypsy moth population. c. An increase in th ...
... production by the oak trees. If the mice prey on the larvae of the moths and the moth larvae eat the leaves of the oak, how can this be so? a. Gypsy moths do not influence acorn production. b. An increase in the mouse population leads to a decrease in the gypsy moth population. c. An increase in th ...
Ecosystem
... • 1. Energy flow; with some rare exceptions, life depends on energy from the sun • 2. Nutrient dynamics (storage, flow, and turnover in organisms and inorganic pools) • 3. Population dynamics (all things that affect numbers of organisms at any given time, e.g., weather, predation) ...
... • 1. Energy flow; with some rare exceptions, life depends on energy from the sun • 2. Nutrient dynamics (storage, flow, and turnover in organisms and inorganic pools) • 3. Population dynamics (all things that affect numbers of organisms at any given time, e.g., weather, predation) ...
endangered species
... Non-native species introduction – You may ask, exactly what is a non-native species? Non-native species are those species that do not naturally occur in a habitat or even a specific region of the world, but have been introduced or brought into the area, either intentionally or accidentally, by huma ...
... Non-native species introduction – You may ask, exactly what is a non-native species? Non-native species are those species that do not naturally occur in a habitat or even a specific region of the world, but have been introduced or brought into the area, either intentionally or accidentally, by huma ...
File
... The biosphere (BI uh sfihr) is the portion of Earth that supports life. Ecologists study what takes place in the biosphere. The biosphere includes the air, water, and land where organisms can live, both above and below the ground. The biosphere supports a wide variety of organisms in a wide range of ...
... The biosphere (BI uh sfihr) is the portion of Earth that supports life. Ecologists study what takes place in the biosphere. The biosphere includes the air, water, and land where organisms can live, both above and below the ground. The biosphere supports a wide variety of organisms in a wide range of ...
Bird response to disturbance varies with forest productivity in the
... even-aged conifer dominated stands in highly productive forests (Verschuyl et al. 2008; Hayes et al. 2005). Conversely, in less-productive east-side Cascade sites, species diversity is limited by harsh abiotic conditions that act to control species diversity (Verschuyl et al. 2008; Swenson and Warin ...
... even-aged conifer dominated stands in highly productive forests (Verschuyl et al. 2008; Hayes et al. 2005). Conversely, in less-productive east-side Cascade sites, species diversity is limited by harsh abiotic conditions that act to control species diversity (Verschuyl et al. 2008; Swenson and Warin ...
Introduction
... As this paper will show, the clear-cutting of the rainforest has already eliminated much of the natural habitat of the red-tailed swallow, thus reducing the population growth rate of a species that plays a vital part in maintaining the balance of the ecosystem. Its extinction would result not only i ...
... As this paper will show, the clear-cutting of the rainforest has already eliminated much of the natural habitat of the red-tailed swallow, thus reducing the population growth rate of a species that plays a vital part in maintaining the balance of the ecosystem. Its extinction would result not only i ...
At high densities kangaroo grazing can reduce biodiversity
... Further information about this topic contact: ...
... Further information about this topic contact: ...
Silvicultural Treatments - WV Division of Forestry
... intolerant to shade--requiring direct sunlight for growth) are best regenerated by this practice. Even-Age Management: This silvicultural practice has become commonly known as clear-cutting. When used, all trees on a designated area are cut, allowing the entire area to regenerate. Even-aged manageme ...
... intolerant to shade--requiring direct sunlight for growth) are best regenerated by this practice. Even-Age Management: This silvicultural practice has become commonly known as clear-cutting. When used, all trees on a designated area are cut, allowing the entire area to regenerate. Even-aged manageme ...
Using golf courses to bolster amphibian communities: University of
... Q: It seems to me that one of the {lrst things that a typical landowner may want to do with a newly constructed pond is to stock it with {Ish. Forthat reason, do you think that golf course water features could be more successful than homeowner ponds in bolstering amphibian populations? A: Building a ...
... Q: It seems to me that one of the {lrst things that a typical landowner may want to do with a newly constructed pond is to stock it with {Ish. Forthat reason, do you think that golf course water features could be more successful than homeowner ponds in bolstering amphibian populations? A: Building a ...
Mark Walker - Northwest Power and Conservation Council (Council)
... The lower Willamette River is used by large numbers of juvenile and adult anadromous salmonids Oncorhynchus spp. annually. Three races of anadromous salmonids that use the lower Willamette River have been listed as threatened under the Endangered Species Act: Willamette River winter steelhead (O. my ...
... The lower Willamette River is used by large numbers of juvenile and adult anadromous salmonids Oncorhynchus spp. annually. Three races of anadromous salmonids that use the lower Willamette River have been listed as threatened under the Endangered Species Act: Willamette River winter steelhead (O. my ...
watershed plan - Fish and Wildlife Compensation Program
... Canada‟s fisheries, including pacific salmon. It does so through management and monitoring of fisheries, protection of fish habitat, and pollution prevention. The Policy for the Management of Fish Habitat (1986) has an overall objective of „net gain‟ of fish habitat and helps guide the implementatio ...
... Canada‟s fisheries, including pacific salmon. It does so through management and monitoring of fisheries, protection of fish habitat, and pollution prevention. The Policy for the Management of Fish Habitat (1986) has an overall objective of „net gain‟ of fish habitat and helps guide the implementatio ...
A call for an end to calls for the end of invasion biology
... Davis (2009) seeks to end invasion biology mainly because he feels the processes of plant succession subsume those of plant invasion, so the latter should be studied in the framework of the former rather than as part of a separate discipline. This is not a new argument. For instance, Egler (1942) su ...
... Davis (2009) seeks to end invasion biology mainly because he feels the processes of plant succession subsume those of plant invasion, so the latter should be studied in the framework of the former rather than as part of a separate discipline. This is not a new argument. For instance, Egler (1942) su ...
Block II - Madhya Pradesh Bhoj Open University
... Andaman and Arunachal Pradesh to the deserts of Rajasthan and Ladakh. It lies at the junction of the three biogeographical provinces of Africa, temperate Eurasia and Orient. As a result, it has rich biological heritage that qualifies it as one of the 12megadiversity nations of the world. The industr ...
... Andaman and Arunachal Pradesh to the deserts of Rajasthan and Ladakh. It lies at the junction of the three biogeographical provinces of Africa, temperate Eurasia and Orient. As a result, it has rich biological heritage that qualifies it as one of the 12megadiversity nations of the world. The industr ...
Factors structuring the fish community in the area of the Coaracy
... (Levene). When these assumptions were not upheld, the square root of the values was used for analysis. Differences detected in the ANOVA were verified by Tukey’s a posteriori test to determine which pairs of sites were significantly different (α = 0.05). A multivariate BIOENV analysis was conducted ...
... (Levene). When these assumptions were not upheld, the square root of the values was used for analysis. Differences detected in the ANOVA were verified by Tukey’s a posteriori test to determine which pairs of sites were significantly different (α = 0.05). A multivariate BIOENV analysis was conducted ...
Southeastern Arizona Monitoring Program
... collecting density, and age & form class data. The 100’ tape serves as the center line for the belt transect. Two 6 foot poles are used either side of the tape to form a long, narrow quadrat. Determining plant density is accomplished by counting the number of individuals in the belt transects. Densi ...
... collecting density, and age & form class data. The 100’ tape serves as the center line for the belt transect. Two 6 foot poles are used either side of the tape to form a long, narrow quadrat. Determining plant density is accomplished by counting the number of individuals in the belt transects. Densi ...
Document
... During the past several years, the scientific community has worked to develop and advocate for NEON. During the past several months, however, issues have been identified that have helped clarify what must be addressed for NEON to move forward successfully. Perhaps the overarching issue is that NEON ...
... During the past several years, the scientific community has worked to develop and advocate for NEON. During the past several months, however, issues have been identified that have helped clarify what must be addressed for NEON to move forward successfully. Perhaps the overarching issue is that NEON ...
BiomePresentation project
... - Describe how organisms within the same species and different species compete for resources Resource level starts high, ends low ...
... - Describe how organisms within the same species and different species compete for resources Resource level starts high, ends low ...
Document
... • These plants die, and they add more nutrients to the soil • Now larger trees can grow: Beech, Oak, Walnut, Maple… ...
... • These plants die, and they add more nutrients to the soil • Now larger trees can grow: Beech, Oak, Walnut, Maple… ...
- University of East Anglia
... ecological functions. In particular, body size responses reflected correlations with life ...
... ecological functions. In particular, body size responses reflected correlations with life ...
- Wiley Online Library
... Fornara & Tilman 2009). Alternatively, strong competitive interactions can drive greater production at increasing levels of diversity if one particularly productive species is a superior competitor and the probability of an assemblage containing this species increases with increasing diversity (Rosc ...
... Fornara & Tilman 2009). Alternatively, strong competitive interactions can drive greater production at increasing levels of diversity if one particularly productive species is a superior competitor and the probability of an assemblage containing this species increases with increasing diversity (Rosc ...
EIS Aquatic Ecology Impact Assessment
... be potentially locally threatened were identified, as known to be present or likely to be present, in the project development area. The species are of conservation value, as they are not very tolerant to change. Macroinvertebrates (animals, including insects, that have no backbone and can be seen wi ...
... be potentially locally threatened were identified, as known to be present or likely to be present, in the project development area. The species are of conservation value, as they are not very tolerant to change. Macroinvertebrates (animals, including insects, that have no backbone and can be seen wi ...
BCS311 Module 5
... matter within it. Ecological theory and principles allow us to construct models that explain how populations of different species grow and cooperate in spaces smaller than the ecosystem. No ecosystem is completely closed and communicates with other ecosystems within the biosphere of our planet. Howe ...
... matter within it. Ecological theory and principles allow us to construct models that explain how populations of different species grow and cooperate in spaces smaller than the ecosystem. No ecosystem is completely closed and communicates with other ecosystems within the biosphere of our planet. Howe ...
Effects of phytopathogens on plant community dynamics: a review
... castrating endophyte infection benefits the growth of Agrostis at low density, but problems arise at ...
... castrating endophyte infection benefits the growth of Agrostis at low density, but problems arise at ...
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.