Végétation du Haut-Saint-Laurent

Jeux de données: (1) relevés de végétation de quadrats situés dans la Municipalité Régionale de Comté du Haut-Saint-Laurent, 1982-86.

Data holder(s)

Additional information

Cette thèse porte sur l'étude des communautés végétales perturbées que l'on retrouve dans la Municipalité Régionale de Comté du Haut-Saint-Laurent. Le but général consiste à identifier, selon le contexte des mosaïques de végétation, les variables significatives qui structurent les groupes écologiques d'espèces et les communautés forestières ou arbustives.

Number of sites

1

Site description

The Municipality régionale de Comté (MRC) du Haut-Saint-Laurent is a territory located in the south-west of the Province of Québec, more precisely between the St.Lawrence River in the north and the New York State (USA) border in the south. It is part of North America's great deciduous forest.

Habitat

The study area belongs to the Great Lakes and St.Lawrence forest, more precisely to the L.2 area of the Haut-St-Laurent, within the Hickory-Maple climax domain, the southernmost domain in Quebec. Between 35 to 40 % of the area supports forest communities mostly located on land unfit for agriculture.

Environment

Terrestrial

Taxa studied

arbres; arbustes; herbacées

Taxonomic information

Vascular plants

Study design

A first photo-interpretation (1:15 000) was done in order to obtain a preliminary of geomorphological system. Sampling plots were determined following a second photo-interpretation. Exploratory field trips were made in order to choose visually homogenous forest areas. A sampling plot (total 452) were chosen by walking fifty steps in a random direction from the center of each homogeneous area.

Study status

Complete

Sampling approaches

Direct visual observation (e.g. fieldwork), Indirect visual observation (e.g. photos)

Study goals

Community level (e.g. richness, distribution, composition), Partial inventory

Frequency of sampling

Plots were visited once.

First year of data collection

1982

Last year of data collection

1986