Quantifying trophic relationships of marine species is fundamental to the construction and performance ecosystem models, development effective ecosystem-based fisheries management strategies, support trait-based approaches ecological risk assessment. Accounting for food web dynamics in taxonomically diverse ecosystems, such as California Current Large Marine Ecosystem (CCLME), especially challe...

Dichromate oxidation is a simple technique that is often Ilsed to estimate the energy content of eggs in studies of marine invertebrate life histories (1). We used this method to measure the energy contents af the eggs of 12 species of marine annelids. In combinati on with measures of egg ash­ free dry weight (AFDW), these data yielded estimates of AFDW-specific energy density that were mostly ...

Although freshwater and marine systems both receive light and heat energy from the sun and are mixed by the wind, only marine systems receive additional mechanical energy from the tide. This input is very small relative to the flux of solar energy but may exceed that from wind. Some obvious physical consequences of this additional energy input include the development of intertidal habitats, the...

This paper describes the marine cadastre concept, and reviews both the current and future directions of international and national marine cadastre initiatives. This includes an overview of the incentives, objectives, principle tasks and results of current research as well as reporting on the outcomes of the PCGIAP-International Workshop on administering the marine environment held in Malaysia i...

Socioeconomic aspects of the Humboldt Current Large Marine Ecosystem – Extended Summary – Consultancy developed for the TDA-SAP process of the GEF-UNDP project: Towards ecosystem based management of the Humboldt Current Large Marine Ecosystem. Lima, Peru. 21p.

Animals require molecular signals to determine when to divert resources from somatic functions to reproduction. This decision is vital in animals that reproduce in an all-or-nothing mode, such as bristle worms: females committed to reproduction spend roughly half their body mass for yolk and egg production; following mass spawning, the parents die. An enigmatic brain hormone activity suppresses...

Tracks of marine animals in the wild, now increasingly acquired by electronic tagging of individuals, are of prime interest not only to identify habitats and high-risk areas, but also to gain detailed information about the behaviour of these animals. Using recent satellite-derived current estimates and leatherback turtle (Dermochelys coriacea) tracking data, we demonstrate that oceanic currents...