| bankside trees |
Large shading trees along the edge of a river / stream channel, often with exposed roots within the water course and overhanging branches that can be submerged in the water. |
resource |
| bare sand & chalk |
This assemblage contains species that are associated with hot, dry soil conditions normally found in bare ground in early successional habitats. |
SAT |
| bark & cambium |
Deadwood where the bark remains attached and where the species develop either within the long dead outer bark tissues, the more freshly dead lower bark (phloem), or the cambial layer below. |
resource |
| bark & sapwood decay |
The assemblage type is found in and around trees and shrubs generally, but especially in older specimens. The assemblage is primarily associated with death and decay of the outer woody tissues of the trees or shrubs - the sapwood and bark. |
SAT |
| bark (feeding on) |
A species that feeds on the bark of trees and shrubs. |
resource |
| bark predator |
A species that uses bark surfaces to hunt and prey on other invertebrates. |
resource |
| base |
Freshwater with base-rich status, such as chalk rivers, marl lakes or within calcareous lowland fens. |
resource |
| base rich |
Associated with sites that are of generally high pH, as a direct result of the nature of the geology. |
resource |
| base rich seepage |
These open seepages are confined to limestone districts and to a lesser extent chalk. Sometimes they can be found in base-rich seepages and springs arising from glacial clays and sands which are rich in calcium carbonate. |
resource |
| base status |
A measure of the degree of acidity or alkalinity within the habitat. |
subheading |
| base-neutral |
Freshwater with base-rich to neutral status. |
resource |
| bats |
Invertebrate that is parasitic on bats. |
label |
| beetle galleries |
Species associated with bark beetle galleries and similar. |
resource |
| beneath loose bark |
Loose bark is that which is easily stripped off and often well-separated from the cambial layer underneath. |
resource |
| beneath mouldy bark |
Bark covered in moulds. |
resource |
| beneath scorched bark |
Bark affected by fire. |
resource |
| beneath tight bark |
Bark and wood in the early stages of decay, where the wood still produce saps and the bark is difficult to peel off. |
resource |
| bird nests |
Species associated with bird’s nests, where they may be detrivores or predators of other invertebrates. |
resource |
| birds |
Invertebrate that is parasitic on birds. |
label |
| brackish dune slacks |
Low lying depressions between the foredunes and the main dunes. These often fill with water to form temporary pools. These particular slacks have a saline influence and the water within them is brackish. Currently classed as a specific subset of brackish pools and ditches. |
resource |
| brackish pools & ditches |
A habitat influenced by both saline and fresh water. This often means that the water is saline but less saline than the sea. Such habitats occur in pools and ditches in the upper saltmarsh or alongside freshwater seepages. |
habitat |
| Broad biotope |
The top-level division into broad ecological groups. |
general glossary |
| broadleaved only |
A deciduous tree (such as oak, beech etc.) that has wide leaves, generally shed in autumn, as opposed to the needles on conifers. |
resource |
| bumble bee nests |
Species that are associated with nests of true bumblebees (Bombus spp.), especially underground nests. Includes the cuckoo bumblebees that are inquilines in the nests of true bumblebees, plus species that are parasitoids or scavengers in the nest. |
resource |
