as a PDF
... with the general historical trend cited above, suggests that the Utah jackrabbit population is also cyclic. 2.4. Otherhares The European hare (L. europaeus) is the only other species for which indices are adequate to classify fluctuations. These were reviewed by Keith (1981) and interpreted as indic ...
... with the general historical trend cited above, suggests that the Utah jackrabbit population is also cyclic. 2.4. Otherhares The European hare (L. europaeus) is the only other species for which indices are adequate to classify fluctuations. These were reviewed by Keith (1981) and interpreted as indic ...
journal.pone.0170
... superior competitive species [7–9]. Compared to Arctic charr, whitefish are especially considered to be a superior zooplanktivorous predator [7]. While resource partitioning of the trophic niche of lacustrine fish communities frequently receives most attention, the dynamic mechanisms structuring the ...
... superior competitive species [7–9]. Compared to Arctic charr, whitefish are especially considered to be a superior zooplanktivorous predator [7]. While resource partitioning of the trophic niche of lacustrine fish communities frequently receives most attention, the dynamic mechanisms structuring the ...
Strength of asymmetric competition between predators in food webs
... hand, if the dominant species responds like a generalist that functionally shifts habitat and/or diet to track peak prey density populations, the greatest effect on the subdominant species could be expected in the increase and peak phases of the cycle. Moreover, the presence of external subsidies (e ...
... hand, if the dominant species responds like a generalist that functionally shifts habitat and/or diet to track peak prey density populations, the greatest effect on the subdominant species could be expected in the increase and peak phases of the cycle. Moreover, the presence of external subsidies (e ...
Communities, Biomes, and Ecosystems
... the numbers, reproduction, or distribution of organisms is called a limiting factor. Includes sunlight, climate, temperature, water, nutrients, fire, soil chemistry, and space, and ...
... the numbers, reproduction, or distribution of organisms is called a limiting factor. Includes sunlight, climate, temperature, water, nutrients, fire, soil chemistry, and space, and ...
Light, temperature and competition
... Shallow rocky-bottom communities are highly productive and diverse ecosystems, sustaining important ecosystem functions such as nutrient cycling, primary production and water purification. They are characterized by a hard bottom surface made up by rocks or boulders and little sedimentation, allowing ...
... Shallow rocky-bottom communities are highly productive and diverse ecosystems, sustaining important ecosystem functions such as nutrient cycling, primary production and water purification. They are characterized by a hard bottom surface made up by rocks or boulders and little sedimentation, allowing ...
The transition from diffuse to focused extension: Modeled evolution
... System (WARS) underwent a distinctive multi-phase evolution that progressed from an early stage of broadly distributed extension beginning in the Cretaceous Period to a later stage of more focused extension during the Paleogene Period [1–7]. Geophysical surveys indicate that the early stage of exten ...
... System (WARS) underwent a distinctive multi-phase evolution that progressed from an early stage of broadly distributed extension beginning in the Cretaceous Period to a later stage of more focused extension during the Paleogene Period [1–7]. Geophysical surveys indicate that the early stage of exten ...
ExamView - ch 4 practice test.tst
... penetrating the deeper soils. Low seasonal precipitation levels would also favour trees whose roots spread out under the surface allowing the tree to absorb water more easily. PTS: 1 REF: K OBJ: 4.2 | 4.3 LOC: 20-B1.2k | 20-B1.4k 4. ANS: The plants and animals of the tundra are already as far north ...
... penetrating the deeper soils. Low seasonal precipitation levels would also favour trees whose roots spread out under the surface allowing the tree to absorb water more easily. PTS: 1 REF: K OBJ: 4.2 | 4.3 LOC: 20-B1.2k | 20-B1.4k 4. ANS: The plants and animals of the tundra are already as far north ...
Epizoic Bryozoans on Predatory Pycnogonids from the South
... bryozoan colonies belonging to seven cheilostome species. Of the 115 pycnogonids, 26% were fouled by bryozoans. The bryozoan species richness on pycnogonids is similar to that on the adjacent boulders. Compared to other motile host animals, the number of bryozoan species per unit host surface area i ...
... bryozoan colonies belonging to seven cheilostome species. Of the 115 pycnogonids, 26% were fouled by bryozoans. The bryozoan species richness on pycnogonids is similar to that on the adjacent boulders. Compared to other motile host animals, the number of bryozoan species per unit host surface area i ...
Document
... chambers (Hydrobios, Kiel, Germany) for 48 h. Sodium thiosulphate was added to each sample to bleach the iodine solution and allow for autofluorescence detection. For the quantitative assessment of large, shell- and mineral-bearing protozooplankton, including acantharia, the taxopodidan Sticholonche ...
... chambers (Hydrobios, Kiel, Germany) for 48 h. Sodium thiosulphate was added to each sample to bleach the iodine solution and allow for autofluorescence detection. For the quantitative assessment of large, shell- and mineral-bearing protozooplankton, including acantharia, the taxopodidan Sticholonche ...
Biodiversity Hotspots
... Sustainable Forestry Initiative 9 which require that procurement promotes the conservation of biodiversity hotspots. Biodiversity importance – The biodiversity importance of hotspots is due to the high vulnerability of habitats and high irreplaceability of species found within large geographic regio ...
... Sustainable Forestry Initiative 9 which require that procurement promotes the conservation of biodiversity hotspots. Biodiversity importance – The biodiversity importance of hotspots is due to the high vulnerability of habitats and high irreplaceability of species found within large geographic regio ...
PALAEOMAGNETISM, PLATE MOTION AND POLAR WANDER
... Barron et al. (1978) held that palaeomagnetism is a ‘relatively inaccurate tool’ and ‘cannot be used for making precise reconstructions’. They wrote: ‘the error of palaeomagnetic pole determination, especially for individual formation results, could mean as much displacement as 1000-1600 km, without ...
... Barron et al. (1978) held that palaeomagnetism is a ‘relatively inaccurate tool’ and ‘cannot be used for making precise reconstructions’. They wrote: ‘the error of palaeomagnetic pole determination, especially for individual formation results, could mean as much displacement as 1000-1600 km, without ...
curriculum vitae - Towson University
... van Wijk, M.T., K.E. Clemmensen, G.R. Shaver, M. Williams, T.V. Callaghan, F.S. Chapin, III, J.H.C. Cornelissen, L. Gough, S.E. Hobbie, S. Jonasson, J.A. Lee, A. Michelsen, M.C. Press, S.J. Richardson, and H. Rueth. 2003. Long-term ecosystem level experiments at Toolik Lake, Alaska and at Abisko, No ...
... van Wijk, M.T., K.E. Clemmensen, G.R. Shaver, M. Williams, T.V. Callaghan, F.S. Chapin, III, J.H.C. Cornelissen, L. Gough, S.E. Hobbie, S. Jonasson, J.A. Lee, A. Michelsen, M.C. Press, S.J. Richardson, and H. Rueth. 2003. Long-term ecosystem level experiments at Toolik Lake, Alaska and at Abisko, No ...
Program, abstract and lists of participants
... adult arctic foxes in Fennoscandia, of which approximately 50 are found in Sweden, 50 in Norway, and less than 10 in Finland. There are also populations on islands in the Bearing Strait that are threatened. In some cases foxes are severely invested by parasites and in others they a ...
... adult arctic foxes in Fennoscandia, of which approximately 50 are found in Sweden, 50 in Norway, and less than 10 in Finland. There are also populations on islands in the Bearing Strait that are threatened. In some cases foxes are severely invested by parasites and in others they a ...
Yukon Coastal Plain Ecoregion
... Annual precipitation is light, being between only 125 and 200 mm. June through August has the heaviest precipitation, 20 to 35 mm, in the form of rain, drizzle, and occasional snow. The months of October to May have mean monthly amounts of 3 to 5 cm of snow. Winds are strong throughout the year with ...
... Annual precipitation is light, being between only 125 and 200 mm. June through August has the heaviest precipitation, 20 to 35 mm, in the form of rain, drizzle, and occasional snow. The months of October to May have mean monthly amounts of 3 to 5 cm of snow. Winds are strong throughout the year with ...
Friedlaender et al. Antarctic whale resource partitioning 1 1
... unambiguous vertical resource partitioning with minke whales associating with deeper krill aggregations across a range of spatial scales, and (3) that interference competition between these two species is unlikely. These results add to the paucity of ecological knowledge relating baleen whales and t ...
... unambiguous vertical resource partitioning with minke whales associating with deeper krill aggregations across a range of spatial scales, and (3) that interference competition between these two species is unlikely. These results add to the paucity of ecological knowledge relating baleen whales and t ...
Marine protected area network planning in the
... network that is representative of all physical ecological units (akin to habitat types), b) foster connectivity between sites in terms of ecosystem function and management, and, c) replicate ecologically important physical units and/or ecosystem processes. Strategically, areas need not be representa ...
... network that is representative of all physical ecological units (akin to habitat types), b) foster connectivity between sites in terms of ecosystem function and management, and, c) replicate ecologically important physical units and/or ecosystem processes. Strategically, areas need not be representa ...
Arctic Fox - bibsys brage
... The arctic fox has few enemies on the mountain tundra. However, during the recent years, red foxes has expanded its range into mountainous habitat. The red fox is almost 60% heavier than the arctic fox (Hersteinsson & Macdonald 1982). The asymmetric-size hypothesis claims that bigger animals will be ...
... The arctic fox has few enemies on the mountain tundra. However, during the recent years, red foxes has expanded its range into mountainous habitat. The red fox is almost 60% heavier than the arctic fox (Hersteinsson & Macdonald 1982). The asymmetric-size hypothesis claims that bigger animals will be ...
Seasonal Change in Trophic Niche of Adfluvial Arctic Grayling
... that is located in the Greater Yellowstone Ecosystem, including lakes and streams within Red Rock Lakes National Wildlife Refuge. Historic records dating back to the early 20th century indicate that large numbers of Arctic grayling were present in Centennial Valley lakes, and successful spawning occ ...
... that is located in the Greater Yellowstone Ecosystem, including lakes and streams within Red Rock Lakes National Wildlife Refuge. Historic records dating back to the early 20th century indicate that large numbers of Arctic grayling were present in Centennial Valley lakes, and successful spawning occ ...
Physical Characteristics of Arctic Fox (Alopex lagopus)
... d stbout 130 m2 (19.6) (Fmits et al., 1988) to a maximum of approximately 400-500 m (>lo) (0stbye et al., 1978) respectively. Part of the large variation reported in surface area and number of entrances may result from methodological differences. For example, 0stbye et al. (1978) mostly described ol ...
... d stbout 130 m2 (19.6) (Fmits et al., 1988) to a maximum of approximately 400-500 m (>lo) (0stbye et al., 1978) respectively. Part of the large variation reported in surface area and number of entrances may result from methodological differences. For example, 0stbye et al. (1978) mostly described ol ...
Redalyc.Independent effects of grazing and tide pool habitats on the
... (ANOVA) in the R environment v. 3.1.2 [33]. The analysis included intertidal zone (either mid- or low zone) and habitat (either emergent rock or tide pool) as crossed and fixed factors. The assumptions of homogeneity of variances were tested through Levene’s tests. In addition, we assessed the corre ...
... (ANOVA) in the R environment v. 3.1.2 [33]. The analysis included intertidal zone (either mid- or low zone) and habitat (either emergent rock or tide pool) as crossed and fixed factors. The assumptions of homogeneity of variances were tested through Levene’s tests. In addition, we assessed the corre ...
EEA Environmental Monograph No. 3
... sparsely populated land and sea has been seen as a region for unlimited resource harvesting, into which large amounts of contaminants, such as nuclear wastes, can be deposited. The Kola Peninsula and surrounding areas are particularly affected by heavy industrial pollution, large scale physical encr ...
... sparsely populated land and sea has been seen as a region for unlimited resource harvesting, into which large amounts of contaminants, such as nuclear wastes, can be deposited. The Kola Peninsula and surrounding areas are particularly affected by heavy industrial pollution, large scale physical encr ...
Inglés
... (ANOVA) in the R environment v. 3.1.2 [33]. The analysis included intertidal zone (either mid- or low zone) and habitat (either emergent rock or tide pool) as crossed and fixed factors. The assumptions of homogeneity of variances were tested through Levene’s tests. In addition, we assessed the corre ...
... (ANOVA) in the R environment v. 3.1.2 [33]. The analysis included intertidal zone (either mid- or low zone) and habitat (either emergent rock or tide pool) as crossed and fixed factors. The assumptions of homogeneity of variances were tested through Levene’s tests. In addition, we assessed the corre ...
Eurasia spreading basin to Laptev Shelf transition: structural pattern
... which were approximately 350 m apart. One measurement of thermal conductivity was performed at penetration H9805P01 indicating values of 0.9–1.1 W mK−1 (see Fig. 4g). H E AT - F L O W C O R R E C T I O N The heat-flow stations are located in an area of high sediment accumulation. Thus a correction f ...
... which were approximately 350 m apart. One measurement of thermal conductivity was performed at penetration H9805P01 indicating values of 0.9–1.1 W mK−1 (see Fig. 4g). H E AT - F L O W C O R R E C T I O N The heat-flow stations are located in an area of high sediment accumulation. Thus a correction f ...
Contribution of Greenland to the Danish Fourth National Report
... and the dispersion of ice and marine organisms are of fundamental importance to the distribution and composition of marine ecosystems. The relationship between the cold East Greenland Current and the warmer, more saline Irminger current varies from year to year and affects the distribution of marine ...
... and the dispersion of ice and marine organisms are of fundamental importance to the distribution and composition of marine ecosystems. The relationship between the cold East Greenland Current and the warmer, more saline Irminger current varies from year to year and affects the distribution of marine ...
Document
... gasses (GHG) and heat fluxes between the earth surface and the atmosphere. Changes to the composition of terrestrial biodiversity may determine whether the Arctic will become a source or a sink for GHGs in a warming climate. Climate is historically and currently the most important driver of change o ...
... gasses (GHG) and heat fluxes between the earth surface and the atmosphere. Changes to the composition of terrestrial biodiversity may determine whether the Arctic will become a source or a sink for GHGs in a warming climate. Climate is historically and currently the most important driver of change o ...