How do seaweed adapt to the ocean
The flat body and spines allow some species of plankton to resist sinking by increasing the surface area of their bodies while minimizing the volume. What is kelp for kids? Kelp are large seaweeds, belonging to the brown algae and classified in the order Laminariales.
Where can kelp grow? Rich in biodiversity, kelp forests grow along rocky shorelines, mostly on the Pacific coast, from Alaska to Baja, California. Alaska is home to three types of kelp: Macrocystis two kinds, one of which is giant kelp , Nereocystis luetkeana bull kelp and Alaria fistulosa.
How does kelp reproduce? Kelps are designed to reproduce in water through a complex process known as alternation of generations. In this process, the large kelp forms make spores or cells. These spores are released into the water where they are dispersed.
This kelp continues to grow until it becomes a giant plant that produces spores. What animals eat kelp? Many species or kinds of fish eat kelp. Kelp is also eaten by a lot of invertebrate species. Invertebrates are animals without backbones. Invertebrates that eat kelp include snails and shellfish such as crabs, sea urchins and abalone. What does sea kelp look like? It also helps the seaweed keep water inside and not be dried out completely by the sun. Pascualina Olano Professional.
How does seaweed work? Seaweed is photosynthetic, so it needs sunlight. It converts sunlight to energy through photosynthesis, which uses chlorophyll, the green pigment in plants. In addition, because there is less available light under water, seaweed uses other pigments to harness light not absorbed well by chlorophyll. Lijing Vairaja Professional.
What is the scientific name for seaweed? Seaweed , or macroalgae, refers to several species of macroscopic, multicellular, marine algae. The term includes some types of Rhodophyta red , Phaeophyta brown and Chlorophyta green macroalgae. Jonnie Azuelo Professional. Why is seaweed important to the ecosystem? Seaweeds play a major role in marine ecosystems. As the first organism in marine food chains, they provide nutrients and energy for animals — either directly when fronds are eaten, or indirectly when decomposing parts break down into fine particles and are taken up by filter-feeding animals.
Crispulo Zordan Explainer. Why is seaweed important to the ocean? These forests also occur in the ocean where they are known as kelp forests. Because seaweed is a primary producer and makes its food from the sun, many organisms feed on the kelp and then in turn feed other animals. While kelp is food for many organisms, kelp also provides shelter for many forms of sea life.
Axier Zhurkin Explainer. How long does seaweed live for? Seaweed life and reproductive cycles can be quite complicated. Some seaweeds are perennial, living for many years, while are annuals. Annual seaweeds generally begin to grow in the spring, and continue throughout the summer.
Some red seaweeds have a life span of 6 to 10 years. Sanne Kachan Explainer. Bangiomorpha pubescens n. Palaeobiology 26 : — Palaeobiology of the late Mesoproterozoic ca. Precambrian Research : — Biogenic methane, hydrogen escape, and the irreversible oxidation of early earth.
Clayton MN. Evolution of the Phaeophyta with particular reference to the Fucales. Progress in Phycological Research 3 : 11 — Evolution of the Antarctic benthic algal flora. Journal of Phycology 30 : — Nuclear genes encoding chloroplast hemoglobins in the unicellular green alga Chlamydomonas eugametos. Molecular and General Genetics : — Evolution of Macrocystis spp.
Journal of Phycolog y 37 : — Crawford RMM. Studies in plant survival. Ecological case histories of plant adaptation to adversity.
Oxford: Blackwell Scientific Publications. Cribb AB. Seaweeds of Queensland. Handbook No. Denny MW. Air and water. Towards a new classification of the brown algae.
Progress in Phycological Research 13 : — Calculating just how small a whale can be. Nature : Size of aquatic endotherms. Journal of Phycology 37 : — Dunton KH. Arctic biogeography: the paradox of the marine benthic fauna and flora. Trends in Ecology and Evolution 7 : — American Zoologist 41 : 99 — Dependence of consumers on macroalgal Laminaria solidungula carbon in an Arctic kelp community: 13 C evidence.
Marine Biology 93 : — Aquatic photosynthesis. Malden, MA: Blackwell Science. Fischer G , Wiencke C. Stable carbon isotope composition, depth distribution and fate of macroalgae from the Antarctic Peninsula region. Polar Biology 12 : — Fogg GE. The biology of polar habitats. Oxford: Oxford University Press. Carbon and carbonate metabolism in coastal aquatic ecosystems. Annual Review of Ecology and Systematics 29 : — Effects of size and temperature on metabolic rates.
Early cyanobacterial fossil record: preservation, palaeoenvironments and identification. European Journal of Phycology 34 : — Molecular systematics of the Florideophyceae Rhodophyta using nuclear large and small subunit rDNA sequence data. Molecular evidence for the early colonization of land by fungi and plants. Effects of nitrogen supply and continuous darkness on growth and photosynthesis of the Arctic kelp Laminaria solidungula.
Limnology and Oceanography 42 : — The role of microbial mats in the production of reduced gases on the early Earth. A Neoproterozoic Snowball Earth. Huisman J , Walker DI. A catalogue of the marine plants of Rotnest Island, Western Australia, with notes on their distribution and biogeography.
Kingia 1 : — Innes S , Louigne DM. Jones HG. Plants and microclimate. A quantitative approach to environmental plant physiology. Cambridge: Cambridge University Press. Kain JM. Seasonal growth of two sublittoral species of Rhodophyta off the Isle of Man. Journal of Experimental Marine Biology and Ecology 82 : — Seasonal growth and photoinhibition of Plocamium cartilagineum Rhodophyta off the Isle of Man. Phycologia 26 : 88 — Marine ecology. Biology of the red algae. Cambridge: Cambridge University Press, — Kasting JF.
The rise of atmospheric oxygen. Paleoproterozoic Snowball Earth: extreme climatic and geochemical global change and its biological consequences. Kirst GO , Wiencke C. Ecophysiology of polar algae. Journal of Phycology 31 : — Knowlton N. Molecular genetic analyses of species boundaries in the sea. Hydrobiologia : 73 — The effects of reduced and elevated CO 2 on the seaweed Lomentaria articulata.
Plant, Cell and Environment 22 : — Leigh EG Jr. Wave energy and intertidal productivity. Caribbean reef plants. Their environment, bogeography and ecophysiology. McKay CP. Thickness of tropical ice and photosynthesis on a snowball earth.
Geophysical Research Letter s 27 : — Maberly SC. Exogenous source of inorganic carbon for photosynthesis by marine macroalgae. Journal of Phycology 26 : — Discrimination between 13 C and 12 C by marine plants. Oecologia 91 : — They attach to hard surfaces that may or may not be stationary. These holdfasts may attach to the sea floor, to boats or ships, or to hard-shelled mollusks by producing a glue that facilitates attachment.
All parts of a seaweed touch the water, so it doesn't need an internal conducting system like land plants do; they absorb what they need directly from the water through surface tissues. Thus, the water around seaweed needs to continually move, bringing in fresh supplies of nutrients and gasses.
Seaweed thrives in brackish water or saltwater. Seaweed is photosynthetic, so it needs sunlight.
0コメント