Search results
Results from the WOW.Com Content Network
The pH of water must match that of seawater (pH 7.8–8.4) in order for sponge production to be maximized. Sponges are sensitive to temperature, and extreme fluctuations in ambient temperature can negatively affect the health of sea sponges. High temperatures lead to crashes in sponge cultures.
Geranium maculatum, an Ohio native, is a relative of the common bedding geranium (Pelargonium × hortorum). This list includes plants native and introduced to the state of Ohio, designated (N) and (I), respectively. Varieties and subspecies link to their parent species.
The free-swimming larvae are lecithotrophic and grow slowly after attaching to a benthic surface. [8] [9] [10] Humans use and interact with S. officinalis in a variety of ways. Harvested sponges have been used throughout history for many purposes, including washing and painting. [2] Over-harvesting and sponge disease have led to a decrease in ...
Hexactinellid sponges require a hard substrate, and do not anchor to muddy or sandy sea floors. [6] They are found only where sedimentation rates are low, dissolved silica is high (43–75 μM), and bottom currents are between 0.15 and 0.30 m/s. [5] Dissolved oxygen is low (64–152 μM), and temperatures are a cool 5.5-7.3 °C at the reefs. [5]
The study’s authors collected sponges from waters at least 100 feet deep off Puerto Rico and near the island of St. Croix, analyzed their skeletons’ chemical composition, charted their ...
Amphimedon compressa can grow to a length of 40 cm (16 in) and a diameter of 4 cm (1.6 in), but it is usually smaller in shallow water. The tree-like curved branches grow from a basal encrusting mass, but very occasionally this sponge grows as a small, unbranched, flattened hemisphere. Many small osculi are found on the branches.
The perennial plant northern sea oats offer visual appeal throughout the year. The ornamental grass also provides seeds for wildlife during winter.
These sponges gained media attention when a new species, a gourd-shaped carnivorous sponge, was featured in reports of finds off the coast of Antarctica.The new Chondrocladia was one of 76 [citation needed] sponge species identified in the seas off Antarctica by the Antarctic Benthic Deep-Sea Biodiversity Project (ANDEEP) between 2002 and 2005, conducted aboard the German research vessel ...