新西兰脊椎神经学院论文代写：海洋中的生物
所有的生物都必须保持一个稳定的物理环境，尽管它们的外部世界可能会不断变化。以下是在海洋生物要忍受的一个相当狭窄的范围内应加以调整的方面：
阳光
阳光在海洋环境中起着重要的作用.。光合微生物是海洋中的几乎每一个食物网中的关键物种，依靠阳光来产生有机分子的能量供应。阳光是需要视觉的几个海洋物种依赖于这一点，以防止捕食，捕获猎物，互动和物种鉴定的再现。太多的阳光可能对一些海洋生物造成破坏，因为它可能会使潮间带干燥，同时也会对水体顶部光合微生物的色素造成光抑制。
温度
很多水生生活的冷血动物，这意味着他们依靠生态热源如逐渐活跃在潮湿的温度。水生哺乳动物或者是恒温动物，获取热量，直接从他们的代谢。为了继续这种热，他们通常有解剖适应，如绝缘。潮间带的位置和浅潮下的温度可以经常变换的生物呆在这些环境中必须想办法适应这些革命。相反，开放的海洋温度水平可能继续适度稳定，因此海洋生物不必适应性强.。
盐度
盐度的定义为在水中加盐溶解盐的浓度的测量是在测量零件/万（‰）。生物体必须保持组织中有机盐和水的精确平衡.。半渗透膜使水不溶质转移在实践中称为渗透（Larson R.J.，1986）。如果身体细胞失去了大量的水分，生物体最终会脱水并死亡.。一些物种无法管理他们的内盐的平衡，所以他们会有相似的盐度为外界大气；这样的生物被称为osmoconformers。这样的活生物在开阔的海水中分布最广，盐度相当稳定.。在沿海地区的盐可以改变很大，内更广泛。
新西兰脊椎神经学院论文代写：海洋中的生物
All living things have to continue a stable physical environment although their outside world might be constantly changing. Below are the aspects that should be moderated within a reasonably narrow array if the marine life is to endure:
Sunlight
Sunlight plays an important part in the oceanic environment. Photosynthetic microorganisms are the key species of almost every food web in the sea and rely on the sunbeams to supply energy to generate organic molecules. Sunlight is additionally required for vision as several marine species dependent upon this to prevent predation, catch prey, and interact and for species identification in reproduction. Too much sunlight could nonetheless be destructive to a few marine life forms, as it might raise desiccation in intertidal areas as well as generate photo inhibition via pigment damages to photosynthetic microorganisms in the top of the water column.
Temperature
A lot of aquatic lives are ectotherms, which means they depend upon ecological heat sources and as such are gradually more active in humid temperatures. Aquatic mammals alternatively are endotherms and acquire heat directly from their metabolism. To continue this heat, they commonly have anatomical adaptations like insulation. The temperature of intertidal locations and shallow subtidal could be frequently transforming and organisms staying in these environments have to manage to adapt to these revolutions. On the contrary, open ocean temperature levels could continue to be moderately steady so marine organisms do not have to be as adaptable.
Salinity
Salinity is defined as the measurement of the concentration of dissolved salts in the water column plus Salinity is measured in parts/thousand (‰). Living organisms must keep an accurate balance of organic salts and water in their tissue. Semi-permeable membranes enable water however not solutes to transfer across in a practice referred as osmosis (Larson R.J., 1986). In case of excessive water is lost from body cells, living organisms end up being dehydrated and might die. A few species could not manage their inner salt balance, so they will have the similar salinity as their outside atmosphere; such organisms are called as osmoconformers. Such living organisms are most widespread in the open sea that has a fairly steady salinity. In coastal regions where the salinity could revolutionize substantially, osmoregulators are more widespread.
