Terrestrial Biomes and Aquatic Ecosystems
... • Found at very high latitudes in the Northern Hemisphere • Harsh winds, nutrient-poor soil, and freezing temperatures limit plant growth; no tall trees; mosses and lichens common • Characterized by permafrost (underground soil that is frozen year-round) • Birds and caribou migrate to the tundra ...
... • Found at very high latitudes in the Northern Hemisphere • Harsh winds, nutrient-poor soil, and freezing temperatures limit plant growth; no tall trees; mosses and lichens common • Characterized by permafrost (underground soil that is frozen year-round) • Birds and caribou migrate to the tundra ...
Lecture 3: Wildlife Ecological Principles and Population Ecology Part 2
... Yield – what we as humans reap from a species Maximum Sustained Yield – maximum harvest of species without driving down population size over a given time. This is the goal for most game species. But, managers should be concerned with the ecological carrying capacity (k) of the land so it is not dama ...
... Yield – what we as humans reap from a species Maximum Sustained Yield – maximum harvest of species without driving down population size over a given time. This is the goal for most game species. But, managers should be concerned with the ecological carrying capacity (k) of the land so it is not dama ...
Define Variation
... Scholars of the ancient world generally believed that living species had been created according to some special design for the universe and did not change through time. However in the last two hundred years time, scholars began to question the concept of unchanging species. They began to believe tha ...
... Scholars of the ancient world generally believed that living species had been created according to some special design for the universe and did not change through time. However in the last two hundred years time, scholars began to question the concept of unchanging species. They began to believe tha ...
REVIEW The importance of evolutionary history in studies of plant
... gallery (riparian) forests. The use of congeneric species pairs, each containing one cerrado species and one forest species of the same genus, greatly improves statistical power while assuring phylogenetic independence, an essential condition for inference in comparative studies. For example, in a s ...
... gallery (riparian) forests. The use of congeneric species pairs, each containing one cerrado species and one forest species of the same genus, greatly improves statistical power while assuring phylogenetic independence, an essential condition for inference in comparative studies. For example, in a s ...
distribution
... Underlying details are very different. Tree seedlings can live at very high densities, but as the trees grow, density declines progressively until mature trees are at low densities. ...
... Underlying details are very different. Tree seedlings can live at very high densities, but as the trees grow, density declines progressively until mature trees are at low densities. ...
letter
... influence on species richness. Thus, for low to intermediate values of matrix habitat, there is a balance between opposing trends, and species richness does not change. However, above a critical amount of increase in matrix habitat, both the number of patches and their heterogeneity start to decline ...
... influence on species richness. Thus, for low to intermediate values of matrix habitat, there is a balance between opposing trends, and species richness does not change. However, above a critical amount of increase in matrix habitat, both the number of patches and their heterogeneity start to decline ...
adaptation, speciation, and convergence: a hierarchical analysis of
... Adaptive radiation is ‘‘evolutionary divergence of members of a single phylogenetic line into a variety of different adaptive forms’’ (Futuyma, 1998). Models of adaptive radiation (Simpson, 1953; Schluter, 2000) begin with a species in an environment in which resources are plentiful, but few, if any ...
... Adaptive radiation is ‘‘evolutionary divergence of members of a single phylogenetic line into a variety of different adaptive forms’’ (Futuyma, 1998). Models of adaptive radiation (Simpson, 1953; Schluter, 2000) begin with a species in an environment in which resources are plentiful, but few, if any ...
Relationship between evenness and body size in species rich
... between lakes and pools, but we stress that our goal is not a comparison of these habitats per se but rather we make use of their characteristics to illustrate how the distribution of size classes in an assemblage influences evenness. Evenness statistics quantify the relative abundance of species. E ...
... between lakes and pools, but we stress that our goal is not a comparison of these habitats per se but rather we make use of their characteristics to illustrate how the distribution of size classes in an assemblage influences evenness. Evenness statistics quantify the relative abundance of species. E ...
Alien invasive species (AIS)
... becoming invasive is increased if the species is introduced intentionally and cultivated over a long period, since it is more likely to become established and therefore invasive. In addition, if the species is a generalist, and/or is introduced into a new environment with similar climatic ...
... becoming invasive is increased if the species is introduced intentionally and cultivated over a long period, since it is more likely to become established and therefore invasive. In addition, if the species is a generalist, and/or is introduced into a new environment with similar climatic ...
Organism Interactions and Population Dynamics 1. Which of the
... can be used by other organisms. Logically, there will be less chemical energy available if plants do not have enough sunlight to perform photosynthesis. 4. Competition between two or more species for the same resources limits the population size of at least one, if not both, of the species involved ...
... can be used by other organisms. Logically, there will be less chemical energy available if plants do not have enough sunlight to perform photosynthesis. 4. Competition between two or more species for the same resources limits the population size of at least one, if not both, of the species involved ...
Marine Turtles - The Australian Fisheries Management Authority
... Turtles can interact with fishers using trawl methods when they swim into nets and get entangled. They can also interact with longline fishers when they get hooked or tangled in the lines. Fishery management plans require all reasonable measures to be taken to avoid interactions with protected spec ...
... Turtles can interact with fishers using trawl methods when they swim into nets and get entangled. They can also interact with longline fishers when they get hooked or tangled in the lines. Fishery management plans require all reasonable measures to be taken to avoid interactions with protected spec ...
BIL 161 Research Project: Biodiversity in Local Ecosystems and
... ledge of each lab. Note that the species living in the water column itself, those in the algae, and those living in the sludge at the bottom might not be the same. Coral Gables and surrounding communities are dotted with many man-made ponds and canals. Some are connected to each other, and some are ...
... ledge of each lab. Note that the species living in the water column itself, those in the algae, and those living in the sludge at the bottom might not be the same. Coral Gables and surrounding communities are dotted with many man-made ponds and canals. Some are connected to each other, and some are ...
Invasive Species
... sometimes resulting in substantially increased abundance and geographical ranges. Such range changes share some important features with invasive alien species, and some are considered undesirable and require management intervention. Some native species can become weedy; examples include the native g ...
... sometimes resulting in substantially increased abundance and geographical ranges. Such range changes share some important features with invasive alien species, and some are considered undesirable and require management intervention. Some native species can become weedy; examples include the native g ...
Potential Fishery Impacts to Alaska from a Marine Invasive Species: the Colonial Tunicate Didemnum vexillum
... ocean bottom from 50-200meters (middle to outer shelf). The only commercial scallop fishery in Alaska is for weathervane scallops on the outer coast from Cape Spence to Yakutat. Rock scallops are being considered a potential native mariculture species for Alaska. ...
... ocean bottom from 50-200meters (middle to outer shelf). The only commercial scallop fishery in Alaska is for weathervane scallops on the outer coast from Cape Spence to Yakutat. Rock scallops are being considered a potential native mariculture species for Alaska. ...
Succession presentation
... in the composition of species that occupy a given area through time It involves initial colonisation and establishment of pioneer plant species, followed by their replacement with other species until a relatively stable community is formed Occurs because, through the processes of living, growing and ...
... in the composition of species that occupy a given area through time It involves initial colonisation and establishment of pioneer plant species, followed by their replacement with other species until a relatively stable community is formed Occurs because, through the processes of living, growing and ...
ppt - eweb.furman.edu
... For example, the transition in community type at a ‘serpentine boundary’. Serpentine soils have very high chromium, nickel, and magnesium. There is usually an abrupt change in soil concentrations, creating an abrupt change in community type. ...
... For example, the transition in community type at a ‘serpentine boundary’. Serpentine soils have very high chromium, nickel, and magnesium. There is usually an abrupt change in soil concentrations, creating an abrupt change in community type. ...
IOSR Journal Of Environmental Science, Toxicology And Food Technology (IOSR-JESTFT)
... Brachionus and Lecane are the dominant genera of this study which are represented by 17 and 10 species respectively. The species richness of these two genera may be attributed to the general tropical character. The order wise representation of rotifer fauna of the present study is given in Fig.1 and ...
... Brachionus and Lecane are the dominant genera of this study which are represented by 17 and 10 species respectively. The species richness of these two genera may be attributed to the general tropical character. The order wise representation of rotifer fauna of the present study is given in Fig.1 and ...
Sustainable rangeland management: how grazing management and
... Semi-arid savanna rangelands are currently under threat by overgrazing, which, in the absence of fire, can lead to dense woody cover and often results in the suppression of herbaceous plants. On the other hand, woodland expansion might result in a large increase in Carbon (C) storage in the grasslan ...
... Semi-arid savanna rangelands are currently under threat by overgrazing, which, in the absence of fire, can lead to dense woody cover and often results in the suppression of herbaceous plants. On the other hand, woodland expansion might result in a large increase in Carbon (C) storage in the grasslan ...
Seddon et al. 2014
... and reinforcement The intentional movement and release of animals has occurred for millennia, but the use of translocations to address conservation objectives is barely 100 years old (8). In recent decades, there has been an increase in the number of species that are the focus of conservation transl ...
... and reinforcement The intentional movement and release of animals has occurred for millennia, but the use of translocations to address conservation objectives is barely 100 years old (8). In recent decades, there has been an increase in the number of species that are the focus of conservation transl ...
Phascolarctos cinereus, Koala
... common in Victoria. In New South Wales, they are known to be common in the Pilliga (the species' stronghold is along the north coast), but they are uncommon elsewhere. All South Australian populations became extinct by 1920, and current populations have been introduced outside their original range w ...
... common in Victoria. In New South Wales, they are known to be common in the Pilliga (the species' stronghold is along the north coast), but they are uncommon elsewhere. All South Australian populations became extinct by 1920, and current populations have been introduced outside their original range w ...
Factors affecting Rocky Intertidal Zonation Patterns
... – Each site on the planetary surface gets a surge of water – a high tide- every half lunar day, where the lunar period is 24h and 50 min, thus cycling through high – low – high every 12h 25 min – Hence shores normally experience two high tides and two low tides a day which are delayed by a fixed per ...
... – Each site on the planetary surface gets a surge of water – a high tide- every half lunar day, where the lunar period is 24h and 50 min, thus cycling through high – low – high every 12h 25 min – Hence shores normally experience two high tides and two low tides a day which are delayed by a fixed per ...
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.