|
Hydrilla
''Hydrilla'' (waterthyme) is a genus of aquatic plant, usually treated as containing just one species, ''Hydrilla verticillata'', though some botanists divide it into several species. It is native to the cool and warm waters of the Old World in Asia, Africa and Australia, with a sparse, scattered distribution; in Australia from Northern Territory, Queensland, and New South Wales.Flora Europaea''Hydrilla''/ref>Flora of Taiwan''Hydrilla'' The stems grow up to 1–2 m long. The leaves are arranged in whorls of two to eight around the stem, each leaf 5–20 mm long and 0.7–2 mm broad, with serrations or small spines along the leaf margins; the leaf midrib is often reddish when fresh. It is monoecious (sometimes dioecious), with male and female flowers produced separately on a single plant; the flowers are small, with three sepals and three petals, the petals 3–5 mm long, transparent with red streaks. It reproduces primarily vegetatively by fragmentation and by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Claude Richard
Louis Claude Marie Richard (19 September 1754 – 6 June 1821) was a French botanist and botanical illustration, botanical illustrator. Biography Richard was born at Versailles (city), Versailles. Between 1781 and 1789 he collected botanical specimens in Central America and the West Indies. On his return he became a professor at the École de médecine in Paris. His books included ''Demonstrations botaniques'' (1808), ''De Orchideis europaeis'' (1817), ''Commentatio botanica de Conifereis et Cycadeis'' (1826) and ''De Musaceis commentatio botanica'' (1831). He gave us the special description terminology for the orchids, such as pollinium and gynostemium. The genus ''Richardia'' Kunth, (Araceae) was named in his honor. It is now a synonym of the genus ''Zantedeschia''. This botanist is denoted by the List of botanists by author abbreviation, author abbreviation Rich. when Author citation (botany), citing a botanical name. His son was another notable botanist, Achille Richard. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Egeria Densa
''Elodea densa'', the large-flowered waterweed or Brazilian waterweed, is a species of '' Elodea'' native to warm temperate South America in southeastern Brazil, Argentina, Chile and Uruguay. It is considered a problematic invasive species due to its use in home aquariums and subsequent release into non-native ecosystems. Description ''Elodea densa'' is an aquatic plant growing in water up to deep, with trailing stems to or more long, producing roots at intervals along the stem. The leaves are produced in whorls of four to eight, long and broad, with a pointed leaf tip. The stem system of the plant will grow until it reaches the surface of the water, where it will begin to spread out, creating a thick flower canopy that blocks light from reaching plants below it. It is dioecious, with male and female flowers on separate plants; the flowers are diameter, with three broad, rounded, white petals, long on male plants, and long on female plants.Flora of NW Europe''Egeria den ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Connecticut
Connecticut ( ) is a U.S. state, state in the New England region of the Northeastern United States. It borders Rhode Island to the east, Massachusetts to the north, New York (state), New York to the west, and Long Island Sound to the south. Its capital is Hartford, Connecticut, Hartford, and its most populous city is Bridgeport, Connecticut, Bridgeport. Connecticut lies between the major hubs of New York City and Boston along the Northeast megalopolis, Northeast Corridor, where the New York metropolitan area, New York-Newark Combined Statistical Area, which includes four of Connecticut's seven largest cities, extends into the southwestern part of the state. Connecticut is the List of U.S. states and territories by area, third-smallest state by area after Rhode Island and Delaware, and the List of U.S. states and territories by population, 29th most populous with more than 3.6 million residents as of 2024, ranking it fourth among the List of states and territories of the Unite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquarium Trade
Fishkeeping is a popular hobby, practiced by aquarists, concerned with keeping fish in a home aquarium or garden pond. It is a practice that encompasses the art of maintaining one's own aquatic ecosystem, featuring a lot of variety with various water systems, all of which have their own unique features and requirements. Fishkeeping primarily serves as a token of appreciation and fascination for marine life and the environment that surrounds such, along with other purposes such as the piscicultural fishkeeping industry, serving as a branch of agriculture, being one of the most widespread methods of cultivating fish for commercial profit. Origins of fishkeeping Fish have been raised as food in pools and ponds for thousands of years. Brightly colored or tame specimens of fish in these pools have sometimes been valued as pets rather than food. Many cultures, ancient and modern, have kept fish for both functional and decorative purposes. Ancient Sumerians kept wild-caught fish i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florida
Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic Ocean to the east, the Straits of Florida to the south, and The Bahamas to the southeast. About two-thirds of Florida occupies a peninsula between the Gulf of Mexico and the Atlantic Ocean. It has the List of U.S. states by coastline, longest coastline in the contiguous United States, spanning approximately , not including its many barrier islands. It is the only state that borders both the Gulf of Mexico and the Atlantic Ocean. With a population of over 23 million, it is the List of U.S. states and territories by population, third-most populous state in the United States and ranks List of states and territories of the United States by population density, seventh in population density as of 2020. Florida spans , ranking List of U.S. states ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States asserts sovereignty over five Territories of the United States, major island territories and United States Minor Outlying Islands, various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's List of countries and dependencies by area, third-largest land area and List of countries and dependencies by population, third-largest population, exceeding 340 million. Its three Metropolitan statistical areas by population, largest metropolitan areas are New York metropolitan area, New York, Greater Los Angeles, Los Angel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Invasive Species
An invasive species is an introduced species that harms its new environment. Invasive species adversely affect habitats and bioregions, causing ecological, environmental, and/or economic damage. The term can also be used for native species that become harmful to their native environment after human alterations to its food web. Since the 20th century, invasive species have become serious economic, social, and environmental threats worldwide. Invasion of long-established ecosystems by organisms is a natural phenomenon, but human-facilitated introductions have greatly increased the rate, scale, and geographic range of invasion. For millennia, humans have served as both accidental and deliberate dispersal agents, beginning with their earliest migrations, accelerating in the Age of Discovery, and accelerating again with the spread of international trade. Notable invasive plant species include the kudzu vine, giant hogweed (''Heracleum mantegazzianum''), Japanese knotw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naturalisation (biology)
Naturalisation (or naturalization) is the ecological phenomenon through which a species, taxon, or population of exotic (as opposed to native) origin integrates into a given ecosystem, becoming capable of reproducing and growing in it, and proceeds to disseminate spontaneously. In some instances, the presence of a species in a given ecosystem is so ancient that it cannot be presupposed whether it is native or introduced. Generally, any introduced species may (in the wild) either go extinct or naturalise in its new environment. Some populations do not sustain themselves reproductively, but exist because of continued influx from elsewhere. Such a non-sustaining population, or the individuals within it, are said to be adventive. Cultivated plants, sometimes called nativars, are a major source of adventive populations. Botany In botany, naturalisation is the situation in which an exogenous plant reproduces and disperses on its own in a new environment. For exampl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant - Hydrilla Verticillata - Batu Kawa
Plants are the eukaryotes that form the kingdom Plantae; they are predominantly photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with cyanobacteria to produce sugars from carbon dioxide and water, using the green pigment chlorophyll. Exceptions are parasitic plants that have lost the genes for chlorophyll and photosynthesis, and obtain their energy from other plants or fungi. Most plants are multicellular, except for some green algae. Historically, as in Aristotle's biology, the plant kingdom encompassed all living things that were not animals, and included algae and fungi. Definitions have narrowed since then; current definitions exclude fungi and some of the algae. By the definition used in this article, plants form the clade Viridiplantae (green plants), which consists of the green algae and the embryophytes or land plants (hornworts, liverworts, mosses, lycophytes, ferns, conifers and other gymnosperm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nutrient Cycle
A nutrient cycle (or ecological recycling) is the movement and exchange of inorganic and organic matter back into the production of matter. Energy flow is a unidirectional and noncyclic pathway, whereas the movement of mineral nutrients is cyclic. Mineral cycles include the carbon cycle, sulfur cycle, nitrogen cycle, water cycle, phosphorus cycle, oxygen cycle, among others that continually recycle along with other mineral nutrients into productive ecological nutrition. Overview The nutrient cycle is nature's recycling system. All forms of recycling have feedback loops that use energy in the process of putting material resources back into use. Recycling in ecology is regulated to a large extent during the process of decomposition. Ecosystems employ biodiversity in the food webs that recycle natural materials, such as mineral nutrients, which includes water. Recycling in natural systems is one of the many ecosystem services that sustain and contribute to the well-being ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratophyllum Muricatum
''Ceratophyllum muricatum'', commonly known as the prickly hornwort, is a species of ''Ceratophyllum'' native to much of Europe, Asia, Africa, and the Americas. In the US it has been observed specifically in the states of Florida, Georgia and North Carolina. It has also been observed in Cuba and Jamaica. This species is only able to thrive in inland areas, however, due to being a low-salinity tolerant species. It is rarely observed in coastal tropical areas for these reasons. One fossil subspecies, ''Ceratophyllum mericatum incertum'' has been named from Early Eocene fossils found in the Green River Formation The Green River Formation is an Eocene geologic formation that records the sedimentation in a group of intermountain lakes in three basins along the present-day Green River (Colorado River), Green River in Colorado, Wyoming, and Utah. The sedimen ... and the Wilcox Group. References {{Taxonbar, from=Q15482317 muricatum Freshwater plants Flora of Europe Flora o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratophyllum Demersum
''Ceratophyllum demersum'', commonly known as hornwort (a common name shared with the unrelated Anthocerotophyta), rigid hornwort, coontail, or coon's tail, is a species of flowering plant in the genus ''Ceratophyllum''. It is a submerged, free-floating aquatic plant, with a cosmopolitan distribution, native to all continents except Antarctica. It is a harmful weed introduced in New Zealand.Flora of North America''Ceratophyllum demersum''/ref>Flora of NW Europe''Ceratophyllum demersum''/ref>Blamey, M. & Grey-Wilson, C. (1989). ''Flora of Britain and Northern Europe''. Huxley, A., ed. (1992). ''New RHS Dictionary of Gardening''. Macmillan . It can form turions: buds that sink to the bottom of the water and stay there during the winter before forming new plants in spring. Identification Rigid hornwort can be easily confused with soft hornwort, especially when there is young growth with less stiff leaves. A key feature to look out for is the number of times a leaf is branched: the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
