Table of Contents
What is the fundamental niche of chthamalus?
The fundamental niche of Chthamalus includes both the upper and middle intertidal zones. – The realized niche of a species is a subset of the fundamental niche, limited by biotic interactions such as competition. The realized niche of Chthamalus is the upper intertidal zone only.
Why can t two species occupy the same niche?
The competitive exclusion principle tells us that two species can’t have exactly the same niche in a habitat and stably coexist. That’s because species with identical niches also have identical needs, which means they would compete for precisely the same resources.
What are the three main types of species interactions that occur in a community?
The term “symbiosis” includes a broad range of species interactions but typically refers to three major types: mutualism, commensalism and parasitism.
Which of the following is the best definition of niche?
The niche of an organism is the functional role that it plays within an ecosystem. The niche (better refined as the ‘ecological niche’) is determined by the biotic factors, which comprise of living features such as animals, plants and fungi, and abiotic factors.
Why Chthamalus is restricted to the high tide zone when co occurring in the environment with Semibalanus?
b) Chthamalus was restricted to the upper intertidal zone because of the more severe environment in the lower intertidal zone.
Where is the fundamental niche of Chthamalus Stellatus?
Chthamalus can live in both deep and shallow zones (its fundamental niche), but Semibalanus forces Chthamalus out of the part of its fundamental niche that overlaps the realized niche of Semibalanus.
What is a natural unit consisting of all the biotic factors which interact with each other in a given area?
An ecosystem is a unit of nature and the focus of study in ecology. It consists of all the biotic and abiotic factors in an area and their interactions. Ecosystems can vary in size.
How do mutualism parasitism and commensalism influence natural selection?
Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected. Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed.
Which host relationship is beneficial to the human and causes no harm to the microorganism?
Commensalism is a relationship between species in which one benefits and the other is unaffected. Humans are host to a variety of commensal bacteria in their bodies that do not harm them but rely on them for survival (e.g. bacteria that consume dead skin).
What is the role an organism plays within an ecosystem and the factors required to support that role?
In ecology, the term “niche” describes the role an organism plays in a community. A species’ niche encompasses both the physical and environmental conditions it requires (like temperature or terrain) and the interactions it has with other species (like predation or competition).
How is the health of an ecosystem related to its biodiversity?
Greater biodiversity in ecosystems, species, and individuals leads to greater stability. For example, species with high genetic diversity and many populations that are adapted to a wide variety of conditions are more likely to be able to weather disturbances, disease, and climate change.
Why does Chthamalus live in the upper intertidal zone?
South of the cape, Chthamalus has a refuge from competition in the high intertidal, which is too hot for survival of its superior competitor Semibalanus balanoides. North of the cape, the high intertidal is cooler, and Semibalanus survives, so Chthamalus has no refuge.
What happened in Connells experiment with Chthamalus Stellatus and Semibalanus Balanoides?
He observed that Chthamalus occurs higher on the shore than Semibalanus, and suggested that it was stopped from living further down by competition with Semibalanus. He tested this idea by taking rocks with Chthamalus from high on the shore and screwing them to rocks lower down, amongst the Semibalanus.
What is the difference between mutualism parasitism and commensalism?
Commensialism – where one species benefits while the other is unaffected. Mutualism – both species benefit. Parasitism – one species benefits while one is harmed. Competition – neither benefits.
What is symbiosis parasitism commensalism?
Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected. Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed.
What is ecosystem What are its components write a detailed note on types of ecosystems?
An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. Biotic factors include plants, animals, and other organisms.
Why is it required for the biotic and abiotic factors of an ecosystem to interact with one another?
Abiotic factors help living organisms to survive. Sunlight is the energy source and air (CO2) helps plants to grow. Rock, soil and water interact with biotic factors to provide them nutrition. Interaction between biotic and abiotic factors helps to change the geology and geography of an area.
What is community interaction in social studies?
Community interaction in the collaborative atlas-making context involves sharing knowledge and perspectives across disciplines and between cultures.
How can symbiotic relationships among organisms in an ecosystem influence population?
To Symbiosis, or the close interaction between two or more organisms, is exceedingly common in nature. Symbiotic relationships modify the physiology of the interacting partners, influence their ecological dynamics and evolutionary processes, and ultimately alter the distribution of species across the planet.
What is Balanus balanoides?
Balanus balanoides Linnaeus, 1767 Semibalanus balanoides is a common and widespread boreo – arctic species of acorn barnacle . It is common on rocks and other substrates in the intertidal zone of north-western Europe and both coasts of North America .
Why is Semibalanus balanoides sessile?
Semibalanus balanoides is unlike any other crustacean because the adult is sessile. Although acorn barnacles are hermaphroditic, they cannot fertilize themselves. Therefore, cross fertilization occurs through the insertion of a long extensible penis into the mantle cavity of another acorn barancle that is within close proximity.
How does a cactus survive in the desert?
Cactus Roots Gather Water Quickly And Efficiently After Brief Desert Rains. Desert cacti live in arid regions that get very little precipitation. When it does rain, it comes in short bursts. So cactus adaptations to collect water quickly and efficiently before the moisture evaporates away in the dry air are essential for the plant to survive.
What eats Semibalanus balanoides?
Predators of Semibalanus balanoides include the whelk Nucella lapillus, the shanny Lipophrys pholis, the sea star Asterias vulgaris, and nudibranchs. Although they have no eyes, barnacles are aware of changes in light, and withdraw into their shells when threatened.