Halimeda is a genus of green macroalgae. The algal body (thallus) is composed of calcified green segments. Calcium carbonate is deposited in its tissues, making it inedible to most herbivores. However one species, Halimeda tuna, was described …

Algal meadows are typically composed of green algae belonging to the order Caulerpales (Chlorophyta), such as the calcified genus Halimeda. Halimeda are among the most abundant algae in tropical habitats, and are easily recognized by their plate-like calcified segments, resembling green buttons.

2015年1月15日 · We investigated ecological, physiological, and skeletal characteristics of the calcifying green alga Halimeda grown at CO 2 seeps (pH total ∼ 7.8) and compared them to those at control reefs with ambient CO 2 conditions (pH total ∼ 8.1). Six species of Halimeda were recorded at both the high CO 2 and control sites.

2001年2月1日 · Halimeda survived environmental catastrophe at the K/T boundary, possibly with much of its diversity intact, and in the Cenozoic the genus surpassed the former prominence, indeed preeminence, of Dasycladales to become the major calcareous green alga in …

Halimeda (Caulerpaceae) is a calcified green alga that is widespread today and important as a structural component of many Cenozoic–recent reefs; the genus is estimated to be responsible for ,25–30% of the CaCO3 in Neogene fossil reefs (Stanley and Hardie, 1998).

2023年12月1日 · Ocean acidification (OA) has been identified as one of the major climate-change related threats, mainly due to its significant impacts on marine calcifiers. Among those are the calcareous green algae of the genus Halimeda that are known to be major carbonate producers in shallow tropical and subtropical seas. Hence, any negative OA impacts on ...

2014年6月20日 · Halimeda opuntia is a cosmopolitan marine calcifying green alga in shallow tropical marine environments. Besides Halimeda’s contribution to a diverse habitat, the alga is an important sediment producer.

2014年7月23日 · We investigated ecological, physiological, and skeletal characteristics of the calcifying green alga Halimeda grown at CO 2 seeps (pH total 7.8) and compared them to those at control reefs with ambient CO 2 conditions (pH total 8.1). Six species of Halimeda were recorded at both the high CO 2 and control sites. For the two most

2024年10月11日 · Halimeda opuntia, a unique species of green algae, has recently garnered attention for its distinctive characteristics and ecological significance in tropical marine ecosystems. This cactus-shaped algae, which can grow up to a foot long, plays a pivotal role in reef-building, albeit through mechanisms that differ from those of corals.

Halimeda are green algae from the phylum Chlorophyta and are classified in the order Bryopsidales along with Caulerpa. Bryopsidales are somewhat unique in that they are coenocytes; the entire organism lacks individual cells.