Biogeography and community structure of North American
... deserts. Four species (Pogonomyrmex anzensis, Pogonomyrmex magnacanthus, Pogonomyrmex snellingi, and Pogonomyrmex sp. B) are geographically restricted to these deserts, and Po. californicus is very common in these areas, though it also occurs farther east (86). Three species, Po. magnacanthus, Po. s ...
... deserts. Four species (Pogonomyrmex anzensis, Pogonomyrmex magnacanthus, Pogonomyrmex snellingi, and Pogonomyrmex sp. B) are geographically restricted to these deserts, and Po. californicus is very common in these areas, though it also occurs farther east (86). Three species, Po. magnacanthus, Po. s ...
Seafarers or castaways: ecological traits associated with rafting
... We did not consider species that were only recorded in association with oilrigs as rafters because these large structures essentially represent small permanent reefs, with fully developed communities of benthic marine organisms. Consequently, oilrigs can support substantial numbers of reef fish spec ...
... We did not consider species that were only recorded in association with oilrigs as rafters because these large structures essentially represent small permanent reefs, with fully developed communities of benthic marine organisms. Consequently, oilrigs can support substantial numbers of reef fish spec ...
Hemolymph pH of Crassostrea virginica and Crassostrea airakensis
... Assess pH over time simultaneously with calcium and carbon dioxide concentration Assess hemolymph pH of gaping and ungaped oysters when exposed to low oxygen ...
... Assess pH over time simultaneously with calcium and carbon dioxide concentration Assess hemolymph pH of gaping and ungaped oysters when exposed to low oxygen ...
1 THEME: BIODIVERSITY 1.1 Introduction
... It is informative to compare the level of ecosystem functioning (Figure 3) with the protection level enjoyed by each of the land classes in the Eastern Cape. This tells how well the protected area network in the province is performing in terms of representing terrestrial biodiversity. The analysis p ...
... It is informative to compare the level of ecosystem functioning (Figure 3) with the protection level enjoyed by each of the land classes in the Eastern Cape. This tells how well the protected area network in the province is performing in terms of representing terrestrial biodiversity. The analysis p ...
Owl limpet (Lottia gigantea)
... The female Lottia gigantea is a territorial herbivore that alters its environment by gardening. The limpet maintains a 1 mm thick algae mat of nearly 1000 square centimeters around its home scar. Garden size is proportional to shell size. After exposure to approximately 20 minutes of incoming tidal ...
... The female Lottia gigantea is a territorial herbivore that alters its environment by gardening. The limpet maintains a 1 mm thick algae mat of nearly 1000 square centimeters around its home scar. Garden size is proportional to shell size. After exposure to approximately 20 minutes of incoming tidal ...
The importance of invertebrate biodiversity
... native moth species were recorded over 12 months in a five hectare area, far more than would be expected from an equivalent area of forested scenic reserve. The vascular flora was also diverse although mostly superseded in abundance by the exotic grasses and herbs. A total of 251 vascular plants wer ...
... native moth species were recorded over 12 months in a five hectare area, far more than would be expected from an equivalent area of forested scenic reserve. The vascular flora was also diverse although mostly superseded in abundance by the exotic grasses and herbs. A total of 251 vascular plants wer ...
Plankton: the paradox and the power law arXiv
... between them. For this we introduce a third ingredient: allometric scalings between ecological rates and cell size. These scalings are important because without them a power-law solution would not be possible. Some of the scalings, such those of metabolism and cell doubling time, are themselves well ...
... between them. For this we introduce a third ingredient: allometric scalings between ecological rates and cell size. These scalings are important because without them a power-law solution would not be possible. Some of the scalings, such those of metabolism and cell doubling time, are themselves well ...
Lepomis cyanellus (Rafinesque, 1819)
... In 2010 Netherlands presented a risk analysis of sunfishes (Centrarchidae) in Netherlands. In this study it is shown that at least another four species of Lepomis, besides L. gibossus, should be considered to be potentially invasive and they are all available for export in North America at least, an ...
... In 2010 Netherlands presented a risk analysis of sunfishes (Centrarchidae) in Netherlands. In this study it is shown that at least another four species of Lepomis, besides L. gibossus, should be considered to be potentially invasive and they are all available for export in North America at least, an ...
Are introduced rats (Rattus rattus) both seed predators and
... proportions of females and males) was captured from the Waianae Mountains to replace the previous set of rats. A total of 51 rats were used during this study. Captive feeding trials used the same 12 plant species as those used in the field. For each feeding trial, fruits of a single species, collec ...
... proportions of females and males) was captured from the Waianae Mountains to replace the previous set of rats. A total of 51 rats were used during this study. Captive feeding trials used the same 12 plant species as those used in the field. For each feeding trial, fruits of a single species, collec ...
Do ectotherms partition thermal resources? We still do not know
... “The presence of A. bimaculatus at normal perch heights caused A. wattsi to use perch positions with hotter microclimates and to be active at different times of day than when A. bimaculatus was absent…. this further establishes that there is an inverse relationship between interspecific competition ...
... “The presence of A. bimaculatus at normal perch heights caused A. wattsi to use perch positions with hotter microclimates and to be active at different times of day than when A. bimaculatus was absent…. this further establishes that there is an inverse relationship between interspecific competition ...
A Biodiversity Primer for Ontario
... conditions were improved and it came time to try and reintroduce lake trout, results were disappointing in all but Superior, where enough wild populations survived to make a decent comeback. All those discrete lake trout stocks had evolved for a reason: reproductive success of lake trout in each are ...
... conditions were improved and it came time to try and reintroduce lake trout, results were disappointing in all but Superior, where enough wild populations survived to make a decent comeback. All those discrete lake trout stocks had evolved for a reason: reproductive success of lake trout in each are ...
Ecology Basics - The Science Spot
... Once a niche is left vacant, other organisms can fill that position. For example when the Tarpan, a small wild horse found mainly in southern Russia, became extinct in the early 1900s, its niche was filled by a small horse breed, the Konik ( Figure 2.3). Often this occurs as a new species evolves to ...
... Once a niche is left vacant, other organisms can fill that position. For example when the Tarpan, a small wild horse found mainly in southern Russia, became extinct in the early 1900s, its niche was filled by a small horse breed, the Konik ( Figure 2.3). Often this occurs as a new species evolves to ...
Evolution, biodiversity, and Population Ecology
... • The process of generating new species - A single species can generate multiple species • Allopatric speciation = species formation due to physical separation of populations - Can be separated by glaciers, rivers, mountains - The main mode of species creation Copyright © 2008 Pearson Education, Inc ...
... • The process of generating new species - A single species can generate multiple species • Allopatric speciation = species formation due to physical separation of populations - Can be separated by glaciers, rivers, mountains - The main mode of species creation Copyright © 2008 Pearson Education, Inc ...
Seafarers or castaways: ecological traits associated with rafting
... We did not consider species that were only recorded in association with oilrigs as rafters because these large structures essentially represent small permanent reefs, with fully developed communities of benthic marine organisms. Consequently, oilrigs can support substantial numbers of reef fish spec ...
... We did not consider species that were only recorded in association with oilrigs as rafters because these large structures essentially represent small permanent reefs, with fully developed communities of benthic marine organisms. Consequently, oilrigs can support substantial numbers of reef fish spec ...
Power Point Presentation - Hale AP Biology
... Human Disturbance and Biogeographic factors • Humans have the greatest impact on biological communities worldwide • Human disturbance to communities usually reduces species diversity • Humans also prevent some naturally occurring disturbances, which can be important to community structure • Latitud ...
... Human Disturbance and Biogeographic factors • Humans have the greatest impact on biological communities worldwide • Human disturbance to communities usually reduces species diversity • Humans also prevent some naturally occurring disturbances, which can be important to community structure • Latitud ...
abiotic vs. biotic influences on habitat selection
... Abstract. Species are commonly segregated along gradients of microclimate and vegetation. I explore the question of whether segregation is the result of microhabitat partitioning (biotic effects) or choice of differing microclimates (abiotic effects). I explored this question for four ground-nesting ...
... Abstract. Species are commonly segregated along gradients of microclimate and vegetation. I explore the question of whether segregation is the result of microhabitat partitioning (biotic effects) or choice of differing microclimates (abiotic effects). I explored this question for four ground-nesting ...
Biotic Interactions, Structure, and Long
... The small-scale variability is most intriguing as it is common and originates from different sources (Fraschetti et al. 2005). Small-scale variability is shaped not only by environmental heterogeneity or disturbance (Sousa 1984; Ysebaert and Herman 2002), but also by biotic interactions like facilit ...
... The small-scale variability is most intriguing as it is common and originates from different sources (Fraschetti et al. 2005). Small-scale variability is shaped not only by environmental heterogeneity or disturbance (Sousa 1984; Ysebaert and Herman 2002), but also by biotic interactions like facilit ...
Biogeography and Zoogeography
... • If food is scarce and you're small, for example, getting bigger can help you travel farther for food and survive longer without eating. If food is scarce and you're large, on the other hand, getting smaller can help you survive on less food. Sept. 22, 2010 ...
... • If food is scarce and you're small, for example, getting bigger can help you travel farther for food and survive longer without eating. If food is scarce and you're large, on the other hand, getting smaller can help you survive on less food. Sept. 22, 2010 ...
Understanding the implications of climate change for woodland
... beginning to appear regularly); and, altitudinal or elevational shifts where montane and sub‐ montane species have shifted their zone of occurrence to higher altitudes. Many of these effects have been seen in more mobile taxa (e.g., butterflies, birds), although we are already witnessin ...
... beginning to appear regularly); and, altitudinal or elevational shifts where montane and sub‐ montane species have shifted their zone of occurrence to higher altitudes. Many of these effects have been seen in more mobile taxa (e.g., butterflies, birds), although we are already witnessin ...
WHY LINK SPECIES AND ECOSYSTEMS?
... Finally, in practice many of the data necessary for evaluating the role of species in ecosystems is already available from typical ecosystem studies. For example, Smock et al. (1992) determined rates of macroinvertebrate secondary production in a southeastern stream by dividing the stream ecosystem ...
... Finally, in practice many of the data necessary for evaluating the role of species in ecosystems is already available from typical ecosystem studies. For example, Smock et al. (1992) determined rates of macroinvertebrate secondary production in a southeastern stream by dividing the stream ecosystem ...
Observed Instances of Speciation
... among different groups of organisms. For example, to a botanist working with angiosperms ordinary means might mean a hand lens; to an entomologist working with beetles it might mean a dissecting microscope; to a phycologist working with diatoms it might mean a scanning electron microscope. What mean ...
... among different groups of organisms. For example, to a botanist working with angiosperms ordinary means might mean a hand lens; to an entomologist working with beetles it might mean a dissecting microscope; to a phycologist working with diatoms it might mean a scanning electron microscope. What mean ...
Contrasting latitudinal patterns of life‐history divergence in two
... measurements were made at a standardized point of nestling development. We weighed eggs for each species during the first three days of incubation to control for the effect of water loss on mass over the course of incubation. Eggs were measured with Acculab (Elk Grove, IL, USA) portable balances with ...
... measurements were made at a standardized point of nestling development. We weighed eggs for each species during the first three days of incubation to control for the effect of water loss on mass over the course of incubation. Eggs were measured with Acculab (Elk Grove, IL, USA) portable balances with ...
preliminary ecological survey for the proposed luiperdshoek
... Bioregion is separated from other bioregions within the Nama Karoo Biome by having low mean precipitation and high mean temperatures. The vegetation is dominated by arid shrublands and grasslands. The study area is located within the arid region of South Africa and annually receives between 45-80mm ...
... Bioregion is separated from other bioregions within the Nama Karoo Biome by having low mean precipitation and high mean temperatures. The vegetation is dominated by arid shrublands and grasslands. The study area is located within the arid region of South Africa and annually receives between 45-80mm ...
Lady Beetles, Buckthorn, and Bees
... 1. Determine how the group of egg predators varies by exotic and native lady beetle species and by foraging habitat. 2. Learn more about the guild of predators attacking eggs, have their populations changed in recent decades? 3. Examine additional competitive interactions between native and exoti ...
... 1. Determine how the group of egg predators varies by exotic and native lady beetle species and by foraging habitat. 2. Learn more about the guild of predators attacking eggs, have their populations changed in recent decades? 3. Examine additional competitive interactions between native and exoti ...
table - cabi-isc
... Nutrition: (do not repeat information given under Hosts; this section is not needed for plants) Associations: describe here any floral and faunal associations that are outside the above such as symbionts and include here any information on ecological succession - natural enemies, hosts and vectors o ...
... Nutrition: (do not repeat information given under Hosts; this section is not needed for plants) Associations: describe here any floral and faunal associations that are outside the above such as symbionts and include here any information on ecological succession - natural enemies, hosts and vectors o ...
Bifrenaria
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.