Top Results for Calcareous

The Nashville Basin Cedar Glades are a specific type of savanna and grassland ecosystem located in central Tennessee's Nashville Basin. Characterized by exposed limestone bedrock and very thin, nutrient-poor soils, these calcareous open woodlands support unique plant communities. The harsh, dry cond...

Lithothamnion calcareum is a species of coralline red algae that accumulates calcium and magnesium carbonates in its cell walls, giving it a hard, stony structure. It grows slowly on the seabed of the northeast Atlantic Ocean, where live and dead thalli build up over time to form complex free-living...

Halimeda incrassata is a species of calcified green alga found in tropical and subtropical shallow marine environments, particularly in the Caribbean Sea, the Gulf of Mexico, and the western Atlantic Ocean. The alga consists of a chain of flattened, calcium carbonate segments connected by flexible j...

The Black Prairie, also known as the Black Belt, is a prairie ecoregion located in the southeastern United States, primarily crossing Mississippi and Alabama. The region is defined by its dark, calcareous soils derived from underlying chalk bedrock. Historically covered in tallgrass prairie, the fer...

Penicillus capitatus, commonly known as Neptune's shaving brush, is a species of calcareous green alga found in shallow tropical and subtropical waters of the Atlantic Ocean, including the Caribbean Sea and Florida. It features a stalk topped with a dense, spherical tuft of green filaments, superfic...

Halimeda tuna is a calcified green alga (Chlorophyta) of the Mediterranean Sea and tropical Atlantic, contributing significantly to carbonate sediment accumulation in reef ecosystems. Its body consists of flattened, segmented calcium carbonate plates connected by flexible joints, giving it a distinc...

Halimeda opuntia is a species of calcareous green macroalgae found in tropical marine environments worldwide, including the Caribbean and the Indo-Pacific. It consists of calcified segments that resemble small cacti, contributing significantly to carbonate sediment production on coral reefs as it di...

Penicillus capitatus is a species of calcareous green algae found in shallow tropical and subtropical marine environments such as the Caribbean Sea. Commonly known as the merman's shaving brush, it features a distinct tufted cap of fused filaments atop a stalk anchored to the sea floor. As a calcifi...

Phymatolithon calcareum is a species of crustose coralline red algae found in the northeast Atlantic Ocean. This marine plant plays a crucial ecological role by forming free-living structures known as maerl beds. These slow-growing, calcified habitats provide a vital substrate and refuge for a wide...

Udotea flabellum is a calcified green alga found in tropical and subtropical marine environments. It has a fan-shaped thallus made of siphonous, calcium-carbonate-containing tissue, giving the plant a firm structure and pale green appearance. The species occurs in shallow coastal habitats such as se...

Lithothamnion corallioides is a calcified red alga associated with the northeast Atlantic and Mediterranean regions. It grows as a crust or as free-living calcareous fragments and is one of the species that can form maerl beds, often alongside Phymatolithon calcareum. Because its tissues contain sub...

Udotea cyathiformis is a calcified green alga in the genus Udotea, found in tropical marine environments of the Atlantic and Caribbean regions. Its thallus forms a cup- or funnel-shaped structure supported by a stalk and anchored to the seabed, often in shallow sandy or mixed-substrate habitats. The...

Corallina officinalis is a calcified, articulated red alga that grows as pink, lilac, or whitish tufts attached mainly to rocky shores and tide-pool surfaces. Calcium carbonate deposited in its tissues stiffens the branching fronds, while the dense growth can provide shelter and attachment space for...

Stenobothrus lineatus, the stripe-winged grasshopper, is an acridid species in the subfamily Gomphocerinae. It occurs across Europe and farther east into Asia, and is associated with chalk and limestone grasslands, heaths, and some dune systems. Adults are usually green and brown with red on the abd...

Mesophyllum lichenoides is a crust-forming coralline red alga found in the Mediterranean Sea and the eastern Atlantic Ocean. It deposits calcium carbonate in its tissues and may grow as an attached crust or as a free-living nodule. Detached forms can contribute to maerl-like accumulations on the sea...

Galaxaura rugosa is a species of calcareous red alga in the family Galaxauraceae. It occurs in tropical and subtropical marine environments and forms branched structures whose surfaces are described as rough. Like other calcareous red algae, it incorporates calcium carbonate into parts of its struct...

Rhipilia tomentosa is a species of green alga in the family Udoteaceae. It occurs in tropical marine environments of the Indo-Pacific and has a siphonous body, meaning its thallus consists of a continuous, multinucleate cell rather than many separate cells. The species forms small fan-like structure...

Corallina elongata is an articulated coralline red alga that grows on rocky shores in the Mediterranean and eastern Atlantic. Its tissues contain calcium carbonate, giving the plant a segmented, rigid structure, and it is distinguished from Corallina officinalis by its longer calcified intergenicula...

Lithophyllum incrustans is a crustose coralline red alga that forms hard, calcium-carbonate-rich growths on rocky shores. It occurs in parts of the North Atlantic and Mediterranean, especially on rocky substrates in the intertidal and shallow subtidal zones. Its crusts can appear pink, purple, or gr...

Jania rubens is a small articulated coralline red alga found in temperate and tropical seas in many parts of the world. Its calcified, jointed branches give it a segmented structure, while its small size allows it to grow as an epiphyte on larger algae and seagrasses. It is mainly associated with sh...

A jointed, calcified coralline red alga (Corallinaceae) widespread across the Mediterranean and eastern Atlantic, recognized by its scale-like, compressed, articulated segments.

Titanoderma pustulatum is a crustose coralline red alga with a calcareous thallus that forms a hard crust on marine surfaces. It is recorded from temperate seas and may grow on rocks or other algae as an epiphyte. The species is notable in marine ecology because its surface can induce larval settlem...

Melobesia membranacea is a thin crustose coralline red alga found in temperate marine environments. It commonly grows as an epiphyte directly on the blades of seagrasses and larger seaweeds, forming a calcareous crust over the host surface. Its crustose growth form and association with living marine...

Amphiroa fragilissima is an articulated coralline red alga distributed in tropical and subtropical seas. Its thallus consists of calcified segments joined by more flexible areas, but the segments are notably brittle and can fragment readily. The species is part of the calcareous red-algal flora of w...

Sporolithon ptychoides is a calcified crustose red alga in the family Sporolithaceae and the type species of the genus Sporolithon. Its thallus may form an attached, flattened or knobbly crust, or a free-living rhodolith, a calcareous nodule, reaching roughly 20 cm across. The species was described...