An Index of Diversity and the Relation of Certain Concepts to Diversity
... overlapping,or synonymousmeanings. ness is the same throughout the area studied. In Most widely used are the antonyms: poor- multi-species communities a test of homogeneity rich, uniform-diverse, homogeneous-heterogene-in the statistical sense has rarely been applied to All have been applied to othe ...
... overlapping,or synonymousmeanings. ness is the same throughout the area studied. In Most widely used are the antonyms: poor- multi-species communities a test of homogeneity rich, uniform-diverse, homogeneous-heterogene-in the statistical sense has rarely been applied to All have been applied to othe ...
Species disc. Concept
... Already the old authors used the morphological species concept only in case no other information were available. If they had more information than morphology, they adapted their species concepts accordingly. ...
... Already the old authors used the morphological species concept only in case no other information were available. If they had more information than morphology, they adapted their species concepts accordingly. ...
What are the major stumbling stones for halt
... no activity at all, as policy makers have no certainty about the effectiveness of possible conservation measures. The precautionary principle has been suggested and implemented to avoid inactivity excused by lack of scientific certainty, as noted in the preamble of the CBD: “Where there is a threat ...
... no activity at all, as policy makers have no certainty about the effectiveness of possible conservation measures. The precautionary principle has been suggested and implemented to avoid inactivity excused by lack of scientific certainty, as noted in the preamble of the CBD: “Where there is a threat ...
Habitat selection determines abundance, richness and species
... the mean abundance and species richness of beetles via habitat selection behaviour alone. Aquatic beetles had clear habitat preferences for fishless ponds and the resulting patterns of species richness and abundance matched those reported by large-scale field surveys (Weir 1972; Healey 1984; Fairchi ...
... the mean abundance and species richness of beetles via habitat selection behaviour alone. Aquatic beetles had clear habitat preferences for fishless ponds and the resulting patterns of species richness and abundance matched those reported by large-scale field surveys (Weir 1972; Healey 1984; Fairchi ...
File - Cook Biology
... Ecology Unit Study Guide AP Biology Study Guide: Read through these concepts. If you are not sure of what the concept is or means search for the answer in your textbook and write it on a separate sheet of paper. If you know these terms you should do well on the test. Chapter 51- Animal Behavior 1. S ...
... Ecology Unit Study Guide AP Biology Study Guide: Read through these concepts. If you are not sure of what the concept is or means search for the answer in your textbook and write it on a separate sheet of paper. If you know these terms you should do well on the test. Chapter 51- Animal Behavior 1. S ...
Plant Collection Guidelines for Wildcrafters
... additional habitat for weeds by leaving disturbed ground. For bigger populations (over 1000 plants or clumps), the suggested rule of thumb is collecting no more than 1 in 10. Collect seeds or cuttings rather than entire plants. Leave 9 of every 10 plants unharmed (including 90% of the flowers, s ...
... additional habitat for weeds by leaving disturbed ground. For bigger populations (over 1000 plants or clumps), the suggested rule of thumb is collecting no more than 1 in 10. Collect seeds or cuttings rather than entire plants. Leave 9 of every 10 plants unharmed (including 90% of the flowers, s ...
N - 國立台南大學
... Disturbances such as fires or storms can kill or damage individuals, while creating opportunities for others. Example: Some forest plant species require abundant sunlight and are found only where disturbance has opened the tree canopy. As trees recolonize and create shade, these plants can not pe ...
... Disturbances such as fires or storms can kill or damage individuals, while creating opportunities for others. Example: Some forest plant species require abundant sunlight and are found only where disturbance has opened the tree canopy. As trees recolonize and create shade, these plants can not pe ...
endangered species
... oak trees throughout the eastern U.S. The Black Rat, Norway Rat, and House Mouse were all brought unintentionally on explorer and settler ships from Europe around the world, where they have been particularly destructive to ground-nesting island animals. No matter how they are introduced, non-native ...
... oak trees throughout the eastern U.S. The Black Rat, Norway Rat, and House Mouse were all brought unintentionally on explorer and settler ships from Europe around the world, where they have been particularly destructive to ground-nesting island animals. No matter how they are introduced, non-native ...
From Energy Gradient and Natural Selection to Biodiversity and
... Department of Mathematics, University of Nebraska-Lincoln, Lincoln, NE 68588, USA Abstract: The purpose of this paper is to incorporate well-established ecological principles into a foodweb model consisting of four trophic levels --- abiotic resources, plants, herbivores, and carnivores. The underli ...
... Department of Mathematics, University of Nebraska-Lincoln, Lincoln, NE 68588, USA Abstract: The purpose of this paper is to incorporate well-established ecological principles into a foodweb model consisting of four trophic levels --- abiotic resources, plants, herbivores, and carnivores. The underli ...
Copenhaver 1 Lake and Bog Fish Survey and Water
... significant change in pH levels had occurred. However, the explanation for the increase was not determined. The significant difference maybe due to human and instrumental error of the past, because instruments were not as advanced as today. Half of the sites resulted in an increase in specific ...
... significant change in pH levels had occurred. However, the explanation for the increase was not determined. The significant difference maybe due to human and instrumental error of the past, because instruments were not as advanced as today. Half of the sites resulted in an increase in specific ...
modeling biodiversity dynamics in countryside landscapes
... We conservatively assume zero affinity of group A for human-modified habitat. For group B, we generally assume that the affinity for human-modified habitat is half of the affinity for native habitat, and then test other values. Finally, we assume that the affinity of group C for human-modified habitat is a ...
... We conservatively assume zero affinity of group A for human-modified habitat. For group B, we generally assume that the affinity for human-modified habitat is half of the affinity for native habitat, and then test other values. Finally, we assume that the affinity of group C for human-modified habitat is a ...
Succession - APESatPVHS
... On a cliff After a glacier retreats On a new volcanic island • Where rocks are laid bare by erosion ...
... On a cliff After a glacier retreats On a new volcanic island • Where rocks are laid bare by erosion ...
OPEN-CANOPY OAK WOODLANDS
... Acres without canopy-piercing current oak woodlands without douglas-fir canopy-piercing Douglas-fir ...
... Acres without canopy-piercing current oak woodlands without douglas-fir canopy-piercing Douglas-fir ...
Plant species richness increases the spatial stability of litter mass in
... vegetation (RV). These areas were determined by dividing the total sampling area (Paratudal to Riparian Vegetation) into five strips, oriented parallel to Miranda river. In each area, five quadrats (each, 100 m2) were established with a distance of 100 m between two quadrats. Plants with circumferen ...
... vegetation (RV). These areas were determined by dividing the total sampling area (Paratudal to Riparian Vegetation) into five strips, oriented parallel to Miranda river. In each area, five quadrats (each, 100 m2) were established with a distance of 100 m between two quadrats. Plants with circumferen ...
Inclusion of facilitation into ecological theory
... and remove species, and largely ignores the credit column of the ecological ledger. Our purpose here is to begin to amend this oversight. We consider how inclusion of facilitation into the theory, models and paradigms of population and community ecology can alter many basic predictions, and argue th ...
... and remove species, and largely ignores the credit column of the ecological ledger. Our purpose here is to begin to amend this oversight. We consider how inclusion of facilitation into the theory, models and paradigms of population and community ecology can alter many basic predictions, and argue th ...
Chapter 1 - Edinburgh Research Archive
... nutrients. Clements (1916) states that "Competition occurs whenever two or more plants make demands in excess of the supply." These plants can be from the same or different species. Competition effects are greatest between individuals or species with the same or similar requirements for resources an ...
... nutrients. Clements (1916) states that "Competition occurs whenever two or more plants make demands in excess of the supply." These plants can be from the same or different species. Competition effects are greatest between individuals or species with the same or similar requirements for resources an ...
Evolving to Invade Lesson Plan
... o 2 large bowls, two different colors o 1 smooth kitchen glove o 1 fuzzy winter glove ...
... o 2 large bowls, two different colors o 1 smooth kitchen glove o 1 fuzzy winter glove ...
Maritime cliffs and slopes
... many species of solitary bees and wasps for nest building. They also support rich assemblages of other invertebrates including many rare species confined to this habitat. These include the craneflies Gonomyia bradleyi and Helius hispanicus and the water beetle Sphaerius acaroides. The hard coastal c ...
... many species of solitary bees and wasps for nest building. They also support rich assemblages of other invertebrates including many rare species confined to this habitat. These include the craneflies Gonomyia bradleyi and Helius hispanicus and the water beetle Sphaerius acaroides. The hard coastal c ...
Whitemouth Bog Ecological Reserve
... Many occurrences of rare plants have been found within this ecological reserve, such as the rare rose pogonia orchid, the twig rush, and the nationally vulnerable slender-leaved sundew. Whitemouth Bog is also the only known growing location of Canada rush in Manitoba. Adding to this wealth of veget ...
... Many occurrences of rare plants have been found within this ecological reserve, such as the rare rose pogonia orchid, the twig rush, and the nationally vulnerable slender-leaved sundew. Whitemouth Bog is also the only known growing location of Canada rush in Manitoba. Adding to this wealth of veget ...
1~7 Food Webs As A Focus For Unifying Ecological Theory
... The area of an island (or the volume of a habitat. or the equivalent) and the maximal or the mean food chain length on that island (or in that habitat) are related by very simple reasoning (Cohen and Newman. in press). What is meant by the maximal or the mean food chain length? A simple food chain i ...
... The area of an island (or the volume of a habitat. or the equivalent) and the maximal or the mean food chain length on that island (or in that habitat) are related by very simple reasoning (Cohen and Newman. in press). What is meant by the maximal or the mean food chain length? A simple food chain i ...
Floristic and diversity trend of regeneration in a quartz dominated
... seven (7) as shrubby- herbs and two as shrubs. The herbaceous increase in the study site is an indication of a primary regenerative succession which seems to be progressive toward shrubby habits. The study has shown that open canopy may favour germination and seedling establishment through increased ...
... seven (7) as shrubby- herbs and two as shrubs. The herbaceous increase in the study site is an indication of a primary regenerative succession which seems to be progressive toward shrubby habits. The study has shown that open canopy may favour germination and seedling establishment through increased ...
Symbiotic ~ commensalisms
... • A parasite and its host evolve together. • The parasite adapts to its environment by living in and using the host in ways that harm it. • Hosts also develop ways of getting rid of or protecting themselves from parasites. • Ladybugs live on plants, eating the aphids and benefiting by getting food, ...
... • A parasite and its host evolve together. • The parasite adapts to its environment by living in and using the host in ways that harm it. • Hosts also develop ways of getting rid of or protecting themselves from parasites. • Ladybugs live on plants, eating the aphids and benefiting by getting food, ...
Introduced Species Management in Haida Gwaii (Queen Charlotte
... though few individuals were introduced, they have flourished without competition or predation. Hunting statistics over a 20-year period (1976–1996) indicate that >34,000 animals have been harvested, in addition to food gathering by the Haida Nation (Laskeek Bay Conservation Society 1998). While the ...
... though few individuals were introduced, they have flourished without competition or predation. Hunting statistics over a 20-year period (1976–1996) indicate that >34,000 animals have been harvested, in addition to food gathering by the Haida Nation (Laskeek Bay Conservation Society 1998). While the ...
Critical reading questions - College of Biological Sciences
... the potential to be a major threat to both target and non- threats were not separated, as this information was not contarget species through direct harvest, bycatch, depletion of sistently provided. Multiple threats were recorded for most prey, habitat alteration, or other indirect effects. To desig ...
... the potential to be a major threat to both target and non- threats were not separated, as this information was not contarget species through direct harvest, bycatch, depletion of sistently provided. Multiple threats were recorded for most prey, habitat alteration, or other indirect effects. To desig ...
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.