作者: 污點(diǎn) 時(shí)間: 2025-3-21 21:30
Transformations of Organic Matter: The Carbon CycleThe sea contains a substantial amount of carbon compared to that present in the atmosphere* or in terrestrial organisms (Table 10–1); only rock deposits contain more carbon, but these resources are not involved in the carbon cycle at ecologically meaningful time scales.作者: CYT 時(shí)間: 2025-3-22 02:43
Springer Advanced Texts in Life Scienceshttp://image.papertrans.cn/m/image/623939.jpg作者: SPALL 時(shí)間: 2025-3-22 06:01
Producers and Processes Involved in Primary Productionf producer species with widely different phyletic origins (Taylor 1978), including single-celled phytoplankton and bottom-dwelling benthic algae, large many-celled macroalgae or seaweeds, symbiotic producers such as corals, and higher plants such as seagrasses.作者: N防腐劑 時(shí)間: 2025-3-22 12:21 作者: 煩憂 時(shí)間: 2025-3-22 14:37
The Consequences of Competition Among Prey and Consumption by Predatorspetitive interactions among the species and the effect of predators on those species. As in the case of herbivores, the impact of predation may not be straightforward, as we can see in the following case histories.作者: 抒情短詩(shī) 時(shí)間: 2025-3-22 19:47 作者: 哀悼 時(shí)間: 2025-3-23 00:23
Marine Ecological Processes978-1-4757-1833-1Series ISSN 0172-6226 作者: ELUDE 時(shí)間: 2025-3-23 01:30
ople now have access to social media platforms. However, it is not clear whether their use of such technology is preventing them from following their local customs or advancing the drive to compete for opportunities in the world. Using available e-texts and bound documents, this chapter analyzes the作者: Rodent 時(shí)間: 2025-3-23 07:18 作者: HAIL 時(shí)間: 2025-3-23 10:44 作者: 拋射物 時(shí)間: 2025-3-23 15:45 作者: AWRY 時(shí)間: 2025-3-23 19:59
ress — newspapers and journals — there are a number of internet sites and television programmes devoted to financial information, and a television channel RBK-TV, devoted to economic news, is also available. The financial press market is, like the magazines market, one of the media sectors with the 作者: CUB 時(shí)間: 2025-3-24 01:15
Ivan Valielaom the path of democratization and the government’s imposition of restrictive regulations on civil society have spurred renewed attention to the issue. Current assessments are overly pessimistic, while recent attempts at drawing a balance have been confusing at best. Many have argued that Russian ci作者: Humble 時(shí)間: 2025-3-24 05:57 作者: debris 時(shí)間: 2025-3-24 07:49
Ivan Valielaom the path of democratization and the government’s imposition of restrictive regulations on civil society have spurred renewed attention to the issue. Current assessments are overly pessimistic, while recent attempts at drawing a balance have been confusing at best. Many have argued that Russian ci作者: Infelicity 時(shí)間: 2025-3-24 13:23 作者: Exuberance 時(shí)間: 2025-3-24 18:42 作者: Bronchial-Tubes 時(shí)間: 2025-3-24 19:46
0172-6226 . The third purpose is to guide the reader further into topics of specialized interest by providing sufficient recent references- especially reviews. The fourth objective is to present marine ecology for what it is: a branch of ecology. Many concepts, approaches, and methods of marine ecology are inspired or 978-1-4757-1833-1Series ISSN 0172-6226 作者: 樣式 時(shí)間: 2025-3-25 00:56 作者: BRIBE 時(shí)間: 2025-3-25 06:00
Dynamics of Populations of Consumersble by simply accounting for the biomass of the individuals in the population. We will return to biomass expressions in Chapter 7, where we deal with secondary production. In this chapter we concentrate on numbers of individuals, since most of the work on growth of populations is done on this basis.作者: SPASM 時(shí)間: 2025-3-25 10:49
Food Selection by Consumerssider the relative vulnerability of food items, mainly in reference to the morphology of prey and the physical structure of the habitat. Last, we consider consequences of food selection, especially in regard to stability of prey populations.作者: 媽媽不開(kāi)心 時(shí)間: 2025-3-25 14:13 作者: 關(guān)心 時(shí)間: 2025-3-25 19:23 作者: Stricture 時(shí)間: 2025-3-25 23:50 作者: ingenue 時(shí)間: 2025-3-26 01:30
Feeding and Responses to Food Abundanceeir mouth, as in the case of some nematodes, trematodes, leeches, parasitic copepods, and young mammals. Dissolved food is also obtained by some heterotrophs from their endosymbionts, as in the case of zooxanthellae in corals and other cnidarians, and sulfur bacteria in some pogonophorans and bivalves.作者: disrupt 時(shí)間: 2025-3-26 05:39
Taxonomic Structure: Species Diversitybody of publications that have dealt with three major problems: first, how to quantify the clearly observable differences in diversity, second, how are such differences in taxonomic richness of communities generated and maintained, and third, what do such differences mean ecologically.作者: 大方不好 時(shí)間: 2025-3-26 09:05 作者: conspicuous 時(shí)間: 2025-3-26 14:32
Textbook 19841st editionously, as a synthesis of the field. To achieve these purposes, several objectives were imposed on the writing. The first was, since ecol- ogists must be the master borrowers of biology, to give the flavor of the eclectic nature of the field by providing coverage of many of the interdis- ciplinary to作者: BLANC 時(shí)間: 2025-3-26 19:38
Nutrient Cycles: Phosphorus, Nitrogen, and Sulfur In this chapter we look at the transformations, exchanges, and general dynamics of three nutrients: phosphorus, nitrogen, and sulfur. The dynamics of these three elements illustrate how nutrients interact with sediments and water, and the great significance of oxidation state and of the interactions with organisms.作者: 紅潤(rùn) 時(shí)間: 2025-3-27 00:29
Producers and Processes Involved in Primary Productionf producer species with widely different phyletic origins (Taylor 1978), including single-celled phytoplankton and bottom-dwelling benthic algae, large many-celled macroalgae or seaweeds, symbiotic producers such as corals, and higher plants such as seagrasses.作者: 沒(méi)有貧窮 時(shí)間: 2025-3-27 02:53 作者: 無(wú)孔 時(shí)間: 2025-3-27 08:04 作者: Extricate 時(shí)間: 2025-3-27 12:16 作者: folliculitis 時(shí)間: 2025-3-27 15:52
Feeding and Responses to Food Abundancel feeding mechanisms (Pandian, 1975). Heterotrophs may use organic matter dissolved in water or on larger particles. Dissolved food may be taken up through the body or cell surface, as occurs in microorganisms, many invertebrate parasites, and pogonophorans. Other consumers take up fluids through th作者: badinage 時(shí)間: 2025-3-27 18:50
Food Selection by Consumersnsidered. Moreover, even though there may be sufficient abundance of food items of adequate quality, they may not be easily vulnerable to predators. In this chapter we take up the quality and availability of food particles. First, we need to consider the cues used by consumers in finding and selecti作者: 敏捷 時(shí)間: 2025-3-28 01:38 作者: 忘恩負(fù)義的人 時(shí)間: 2025-3-28 04:01
The Consequences of Competition Among Producers and Consumption by Herbivoresls and concepts that predict the effects that consumers might have on their food species, especially producer species. Then we discuss some specific case histories that permit an assessment of the impact of grazing on marine producers.作者: DAMN 時(shí)間: 2025-3-28 08:20 作者: Insatiable 時(shí)間: 2025-3-28 12:47
Nutrient Cycles: Phosphorus, Nitrogen, and Sulfurobial decomposers, and in a number of other roles. It is clear, then, that nutrients are inextricably linked to almost all other ecological processes. In this chapter we look at the transformations, exchanges, and general dynamics of three nutrients: phosphorus, nitrogen, and sulfur. The dynamics of作者: Obligatory 時(shí)間: 2025-3-28 18:17
Taxonomic Structure: Species Diversityation within many specific taxonomic groups is clearly greater in the tropics than in temperate latitudes, both in terrestrial and in marine environments (Fig. 12–1). Low numbers of species are also typical of severe and disturbed habitats. Such observations have spawned an abundant and contentious 作者: Bombast 時(shí)間: 2025-3-28 19:11 作者: 盡管 時(shí)間: 2025-3-29 01:08
The Structure of Marine Communities Over Time: Long and Short-Term Changesat depths near the bottom where temperature and the chemical milieu are rather constant, there are pulses of materials raining down from the seasonal cycles of production near the surface (cf. Section 10.1121). Presumably this is why seasonal breeding takes place even in benthic organisms in the oth作者: 籠子 時(shí)間: 2025-3-29 05:52
jor socioeconomic global occurrences like World I and II, the Hollocaust, and the Great Depression, cosmopolitan cultures have been transformed on a massive scale and indigenous communities have been forced to adapt to the changes. Meanwhile, the inventors of communication technologies and informati作者: 不來(lái) 時(shí)間: 2025-3-29 09:20
ther differences in journalism cultures—role perceptions, epistemological orientations and ethical stances of journalists- exist between the two countries. The study hypothesizes that though similar cultural orientations of the two countries may lead to similar perceptions and attitudes, politics is作者: 太空 時(shí)間: 2025-3-29 11:33 作者: 浸軟 時(shí)間: 2025-3-29 18:21
Ivan Valiela this chapter are generally consistent with the findings for the other four countries, there are some intriguing differences. To put one conclusion from the data first, the complex and disaggregated nature of the Japanese aid program, encompassing as many as 18 agencies with no overarching coordinat作者: Bricklayer 時(shí)間: 2025-3-29 22:10 作者: confederacy 時(shí)間: 2025-3-30 02:18
Ivan Valielat Russia. At the turn of the millennium, assessments were made not only as this marked the end of the first decade of development, but also the onset of a new era of government with Vladimir Putin assuming the presidency in 2000. By then, many scholars responded with rather optimistic prospects to t作者: candle 時(shí)間: 2025-3-30 08:05
Ivan Valielat Russia. At the turn of the millennium, assessments were made not only as this marked the end of the first decade of development, but also the onset of a new era of government with Vladimir Putin assuming the presidency in 2000. By then, many scholars responded with rather optimistic prospects to t作者: 矛盾心理 時(shí)間: 2025-3-30 08:42
Ivan Valielat Russia. At the turn of the millennium, assessments were made not only as this marked the end of the first decade of development, but also the onset of a new era of government with Vladimir Putin assuming the presidency in 2000. By then, many scholars responded with rather optimistic prospects to t作者: nascent 時(shí)間: 2025-3-30 16:14
