Introduction to Marine Biology
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INTRODUCTION TO MARINE BIOLOGY sparks curiosity about the marine world and provides an understanding of the process of science. Taking an ecological approach and intended for non-science majors, the text provides succinct coverage of the content while the photos and art clearly illustrate key concepts. Studying is made easy with phonetic pronunciations, a running glossary of key terms, end-of-chapter questions, and suggestions for further reading at the end of each chapter. The open look and feel of INTRODUCTION TO MARINE BIOLOGY and the enhanced art program convey the beauty and awe of life in the ocean. Twenty spectacular photos open the chapters, piquing the motivation and attention of students, and over 60 photos and pieces of art are new or redesigned.
toxins are also problematic. Solutions to these problems should ultimately help marine biologists better understand the causes of these harmful blooms and help them ﬁnd ways to control or prevent them. Ù Sanford Berry/Visuals Unlimited Many kinds of marine algae undergo rapid population increases under conditions that are still poorly understood. Some are macroscopic algae such as the exotic Caulerpa taxifolia that has invaded the Mediterranean Sea and continues to expand its coverage of the
seaweeds, sometimes eliminating them from zones along the shore. (b) Some of the clearest examples of seaweed zonation can be found in the intertidal zones of rocky shores. On this Scottish shore, brown algae grow in an upper zone and green algae in a lower zone. The growth of green algae here is partly due to nutrient enrichment from nearby seabird colonies. In general, the distribution of seaweeds by depth is not explained by their possession of different combinations of photosynthetic pigments
measuring primary productivity. Primary productivity refers to the rate at which energy-rich food molecules (organic compounds) are being produced from inorganic materials. If you look at the equation for photosynthesis in Figure 2-16, you will notice that it would be possible to measure the amount of photosynthesis that is taking place by measuring either how much carbon dioxide and water are being used in the process or how much carbohydrate (glucose) and oxygen are being produced. This is the
endoplasmic reticulum functions in the synthesis of lipids and carbohydrates and the detoxification of harmful substances. Organelles called Golgi apparatuses function in the modification of molecules and place membranes around them. These packages of chemicals may be stored for later use or released from the cell. Lysosomes are an example of the membrane-bound sacs produced by the Golgi apparatus. Lysosomes contain enzymes that function in digestion. Vacuoles are structures surrounded by a
salmon) and invertebrates in mariculture operations (shrimp, oysters), papillomas in green turtles and manatees, morbillivirus (related to distemper, measles, and mumps) in seals and whales, and poultry viruses in seabirds (penguins). Scientists attribute the increased incidence of mass mortality and the emergence of new viral diseases to environmental stress on immune systems of marine animals. Marine viral populations probably are controlled by several abiotic and biotic factors. Near the