Progress in Oceanography
... are often linked to climate forcing but can also occur due to anthropogenic forcing, such as heavy fishing or pollution (e.g. Steele, 2004). In the North Atlantic, scientists generally have been much slower to adopt the idea of regime shifts compared to their colleagues working in the North Pacific, h ...
... are often linked to climate forcing but can also occur due to anthropogenic forcing, such as heavy fishing or pollution (e.g. Steele, 2004). In the North Atlantic, scientists generally have been much slower to adopt the idea of regime shifts compared to their colleagues working in the North Pacific, h ...
TerrestrialBiomes
... Reptiles and insects are somewhat “pre-adapted” because of their relatively impervious integument and dry excretions. As a group, mammals are not well adapted because they excrete urea that requires water for excretion, and most use water for temperature regulation. However many mammals managed to a ...
... Reptiles and insects are somewhat “pre-adapted” because of their relatively impervious integument and dry excretions. As a group, mammals are not well adapted because they excrete urea that requires water for excretion, and most use water for temperature regulation. However many mammals managed to a ...
Bio 101 Intro to Ecology
... For example, cacti in North America and euphorbs in African deserts appear similar but are from different evolutionary lineages Figure 52.10 Figure 52.10a Figure 52.10b ...
... For example, cacti in North America and euphorbs in African deserts appear similar but are from different evolutionary lineages Figure 52.10 Figure 52.10a Figure 52.10b ...
Ecologically and biologically significant areas (EBSA)
... activities. In northern Foxe Basin, sea ice predominates for most of the year (November to June) and is characterized as first year ice (Saucier et al. 2004; Laidler et al. 2009). Once the first year ice melts in summer, the area is frequented by old ice (second year and multi-year ice) from the Gul ...
... activities. In northern Foxe Basin, sea ice predominates for most of the year (November to June) and is characterized as first year ice (Saucier et al. 2004; Laidler et al. 2009). Once the first year ice melts in summer, the area is frequented by old ice (second year and multi-year ice) from the Gul ...
Ringed SealS and Climate Change
... As Arctic conditions warm, a greatly increased presence of humans in previously inaccessible areas is anticipated. Activities such as shipping, agriculture and oil exploration are predicted to disturb and further degrade habitats and increased fishing in the area may reduce food availability. ...
... As Arctic conditions warm, a greatly increased presence of humans in previously inaccessible areas is anticipated. Activities such as shipping, agriculture and oil exploration are predicted to disturb and further degrade habitats and increased fishing in the area may reduce food availability. ...
pdf taiga biome
... creeps up on them. Nevertheless, only the young, wounded or older specimens are taken, while adults are spared. During the harsh winter, the majority of these mammals live within the forest, sheltered by the vegetation. The species ...
... creeps up on them. Nevertheless, only the young, wounded or older specimens are taken, while adults are spared. During the harsh winter, the majority of these mammals live within the forest, sheltered by the vegetation. The species ...
Climate change and the ecology and evolution of Arctic vertebrates
... Erignathus barbatus.23 In addition, sea ice is important because it is a solid substrate on which bears can move and rest. Coastal sea ice habitats are particularly important to females with dependent young.24 Some bears use sea ice in all seasons, while other bears stay on land for much of the year ...
... Erignathus barbatus.23 In addition, sea ice is important because it is a solid substrate on which bears can move and rest. Coastal sea ice habitats are particularly important to females with dependent young.24 Some bears use sea ice in all seasons, while other bears stay on land for much of the year ...
Terrestrial trophic dynamics in the Canadian Arctic
... 12 of these sites, and the food-chain structure of these tundra communities. We attempt to estimate the productivity of each of these trophic components, and ultimately to test whether the organization of these tundra communities is predominantly top-down or more bottom-up (Power 1992). We do not th ...
... 12 of these sites, and the food-chain structure of these tundra communities. We attempt to estimate the productivity of each of these trophic components, and ultimately to test whether the organization of these tundra communities is predominantly top-down or more bottom-up (Power 1992). We do not th ...
View full paper - Griffith University
... tropical oceans, to terrestrial animals that live below ground, species manage to persist and eke out a living. No environment is more harsh than Antarctica. During winter the continent and the seas surrounding it are dark 24 hours a day, and air temperatures are typically lower than –40 degrees Cel ...
... tropical oceans, to terrestrial animals that live below ground, species manage to persist and eke out a living. No environment is more harsh than Antarctica. During winter the continent and the seas surrounding it are dark 24 hours a day, and air temperatures are typically lower than –40 degrees Cel ...
Earth`s Shifting Crust
... making it only 10,000 years ago, instead of 30,000 years. A still more startling discovery was that the first known phase of this ice age (called the "Farmdale Advance") occurred only about 25,000 yean ago, instead of more than 100,000 years before the present. Ihis discovery challenged the fundamen ...
... making it only 10,000 years ago, instead of 30,000 years. A still more startling discovery was that the first known phase of this ice age (called the "Farmdale Advance") occurred only about 25,000 yean ago, instead of more than 100,000 years before the present. Ihis discovery challenged the fundamen ...
Full text in pdf format
... density of birds (156 birds km−2) was high compared to that of other locations in the Canadian Arctic. Several bird species were more active early in the morning and with winds from the south, possibly due to an increase in Arctic cod feeding on zooplankton at the surface. Northern fulmars Fulmarus ...
... density of birds (156 birds km−2) was high compared to that of other locations in the Canadian Arctic. Several bird species were more active early in the morning and with winds from the south, possibly due to an increase in Arctic cod feeding on zooplankton at the surface. Northern fulmars Fulmarus ...
A stable isotope (d C, d N) model for the North Water food web
... whale (Balaena mysticetus; Holst and Stirling, 1999). Most of these animals are used by aboriginal peoples of both Canada and Greenland for food and so are also important from an economic and contaminants perspective (Muir et al., 1988; Braune, 1994). However, such populations of animals represent b ...
... whale (Balaena mysticetus; Holst and Stirling, 1999). Most of these animals are used by aboriginal peoples of both Canada and Greenland for food and so are also important from an economic and contaminants perspective (Muir et al., 1988; Braune, 1994). However, such populations of animals represent b ...
Grassland, Desert, and Tundra Biomes
... Many animals that live in the tundra year-round, such as arctic foxes, lose their brown fur and grow white fur that camouflages them with the winter snow. These animals are also extremely well insulated. Threats to the Tundra The tundra is one of the most fragile biomes on the planet. The food chain ...
... Many animals that live in the tundra year-round, such as arctic foxes, lose their brown fur and grow white fur that camouflages them with the winter snow. These animals are also extremely well insulated. Threats to the Tundra The tundra is one of the most fragile biomes on the planet. The food chain ...
Grassland, Desert, and Tundra Biomes
... Many animals that live in the tundra year-round, such as arctic foxes, lose their brown fur and grow white fur that camouflages them with the winter snow. These animals are also extremely well insulated. Threats to the Tundra The tundra is one of the most fragile biomes on the planet. The food chain ...
... Many animals that live in the tundra year-round, such as arctic foxes, lose their brown fur and grow white fur that camouflages them with the winter snow. These animals are also extremely well insulated. Threats to the Tundra The tundra is one of the most fragile biomes on the planet. The food chain ...
Competitive dominance among sessile marine organisms in a high
... occupiers in this high Arctic ecosystem, they were not the competitive dominants in many of the interactions with other sessile organisms, particularly invertebrates. This is not unusual as overgrowth dominants often do not monopolize space, and in fact, the most abundant species can be mid-ranked t ...
... occupiers in this high Arctic ecosystem, they were not the competitive dominants in many of the interactions with other sessile organisms, particularly invertebrates. This is not unusual as overgrowth dominants often do not monopolize space, and in fact, the most abundant species can be mid-ranked t ...
Biomes Section 1 What is a Biome?
... large trees support communities dominated by small trees, shrubs, and grasses. • In biomes where rainfall is not frequent, the vegetation is mostly cactuses and desert shrubs. In extreme cases, lack of rainfall results in no plants, no matter what the temperature is. • The higher the temperature and ...
... large trees support communities dominated by small trees, shrubs, and grasses. • In biomes where rainfall is not frequent, the vegetation is mostly cactuses and desert shrubs. In extreme cases, lack of rainfall results in no plants, no matter what the temperature is. • The higher the temperature and ...
Fun Fact - Creatures Zoo
... The two humps of the Bactrian are for storing fat, which sustains the camel when food and water is not available. They become soft and floppy as the fat is depleted. Bactrian camels are the only land mammal that can quench their thirst with salt water. There are fewer than 1,000 wild Bactrian camels ...
... The two humps of the Bactrian are for storing fat, which sustains the camel when food and water is not available. They become soft and floppy as the fat is depleted. Bactrian camels are the only land mammal that can quench their thirst with salt water. There are fewer than 1,000 wild Bactrian camels ...
the ross sea, antarctica, where all ecosystem
... direct human influence: no oil spills or other significant pollution, no gill netting nor trawling with associated ‘by-catch’, and no over-exploitation of forage- or upper-level fish by industrial fisheries. Moreover, no top-trophic predator populations have been decimated by the introduction of fer ...
... direct human influence: no oil spills or other significant pollution, no gill netting nor trawling with associated ‘by-catch’, and no over-exploitation of forage- or upper-level fish by industrial fisheries. Moreover, no top-trophic predator populations have been decimated by the introduction of fer ...
AMPHIPODS AS FOOD SOURCES FOR HIGHER TROPHIC
... With more than 820 different species, among which about 75% endemics, the amphipod crustaceans form one of the richest animal group of the Southern Ocean. They have colonized most habitats and exhibit very diverse life styles and trophic types. They moreover show a broad size spectrum, with numerous ...
... With more than 820 different species, among which about 75% endemics, the amphipod crustaceans form one of the richest animal group of the Southern Ocean. They have colonized most habitats and exhibit very diverse life styles and trophic types. They moreover show a broad size spectrum, with numerous ...
Ecosystems
... • Coniferous forests in cold, wet climates are called taiga. Winters are long and cold. Most of the precipitation falls in the summer. • The tundra gets very little rain, so plants are short. Much of the water in the soil is not available because the water is frozen for most of the year. ...
... • Coniferous forests in cold, wet climates are called taiga. Winters are long and cold. Most of the precipitation falls in the summer. • The tundra gets very little rain, so plants are short. Much of the water in the soil is not available because the water is frozen for most of the year. ...
Rate of recovery of lichen-dominated tundra vegetation after
... At the time of monitoring plots establishment, the lichen stands were reduced by grazing to a thin layer of fractured lichens and the general height of fruticose species (Cladina ssp.) everywhere was 0.5-1.5-2 cm, on the average 1.25 cm (Magomedova et Morozova 1997). For 13 years of recovery the inc ...
... At the time of monitoring plots establishment, the lichen stands were reduced by grazing to a thin layer of fractured lichens and the general height of fruticose species (Cladina ssp.) everywhere was 0.5-1.5-2 cm, on the average 1.25 cm (Magomedova et Morozova 1997). For 13 years of recovery the inc ...
6. geology - Discovering Antarctica
... Gondwana was completed when the northern tip of the Antarctic Peninsula separated from southern South America by sea-floor spreading in the Scotia Sea, 25 million years ago. This resulted in the isolation of Antarctica and the development of the circumpolar current in the Southern Ocean. Continental ...
... Gondwana was completed when the northern tip of the Antarctic Peninsula separated from southern South America by sea-floor spreading in the Scotia Sea, 25 million years ago. This resulted in the isolation of Antarctica and the development of the circumpolar current in the Southern Ocean. Continental ...
Unit 3 notes - novacentral.ca
... The climax vegetation in the Tundra is grasses, shrubs and low plants with: o shallow roots; o fast reproduction/flowering cycles. The location of the Tundra can be seen by Analyzing the world ecosystem map (figure 6.8) on page 102. It is found only in the northern hemisphere and is located north of ...
... The climax vegetation in the Tundra is grasses, shrubs and low plants with: o shallow roots; o fast reproduction/flowering cycles. The location of the Tundra can be seen by Analyzing the world ecosystem map (figure 6.8) on page 102. It is found only in the northern hemisphere and is located north of ...
Beluga WhaleS and Climate Change
... Some populations (for example, the Cook Inlet and the St Lawrence River populations) are geographically isolated and live in those locations all year round. Other groups of Belugas inhabit fairly well-defined areas in the summer but may mix with other populations in the winter. In spring and summer ...
... Some populations (for example, the Cook Inlet and the St Lawrence River populations) are geographically isolated and live in those locations all year round. Other groups of Belugas inhabit fairly well-defined areas in the summer but may mix with other populations in the winter. In spring and summer ...