Cave Ecosystems: Microbiological View

Toxic metals in aquatic ecosystems: a microbiological perspective.

Microbe-metal interactions in aquatic environments and their exact role in transport and transformations of toxic metals are poorly understood. This paper will briefly review our understanding of these interactions. Ongoing research in Lake Chapala, Mexico, the major water source for the City of Guadalajara, provides an opportunity to study the microbiological aspects of metal-cycling in the wa...

Nitrogen Cycling in West African Ecosystems MICROBIOLOGICAL CONSIDERATIONS OF THE NITROGEN CYCLE IN WEST AFRICAN ECOSYSTEMS

The review is an attempt to specify particular features of the biological processes involved in the nitrogen cycle as they occur in the following categories of West African ecosystems : flooded rice .fields, rain-fed agroecosystems, and forests. In rice fields in Senegal the nitrogen input through blue-green algae was reported to be in the range -, of 1-30 kg ha-' yr-'. Figures for heterotrophi...

Individuals, Species, Ecosystems: A Harthshornian View

A Biological View on Information Ecosystems

We study the dynamics of information ecosystems where there are antagonistic agents or groups of antagonistic agents. In particular, we focus on systems that consist of exploiter agents and agents being exploited. When comparing information ecosystems with biological ecosystems, it becomes clear that both types of systems seem to support robust solutions that are hard to violate by a single age...

Microbiological study of the dripping waters in Altamira cave (Santillana del Mar, Spain).

The culturable microbial populations in dripping waters from Altamira cave were studied and compared with those of the ceiling rock. Water communities have low proportions of gram-positive bacteria, and are mainly composed of gram-negative rods and cocci (Enterobacteriaceae and Vibrionaceae), while those of ceiling rocks are mainly Streptomyces spp. The community differences are probably relate...