The life cycle of Podmosta macdunnoughi (Ricker) in the Lower Laurentians, Quebec (Plecoptera: Nemouridae), with a discussion on embryonic diapause

1993 ◽  
Vol 71 (10) ◽  
pp. 2136-2139 ◽  
Author(s):  
P. P. Harper ◽  
L. LeSage ◽  
M. Lauzon
Keyword(s):  
New England ◽  
Mature Female ◽  
Embryonic Diapause ◽  
Boreal Zone ◽  
Eastern Canada ◽  
Emergence Period ◽  
Wide Range ◽  
Outlet Stream ◽  
Northern New England ◽  
Northern Species

Podmosta macdunnoughi (Ricker) is a small nemourid stonefly distributed over the glaciated areas of eastern Canada and northern New England, but more abundant in the boreal zone. In the outlet stream of Lake Pitt in the Lower Laurentians of Quebec, near the southern edge of its range, the species has a univoltine cycle. The adults emerged in late April and early May. The eggs, however, did not hatch till September and the first nymphs were collected in October. Growth continued throughout the winter and ended just before the emergence period. Though a wide range of sizes was present during the winter, there was a resynchronisation of the population before emergence and a short emergence period due to rapid growth of the smaller nymphs. Mature female nymphs were larger than males. The significance of the embryonic diapause in this northern species is discussed.

BRACHYMERIA INTERMEDIA (HYMENOPTERA: CHALCIDIDAE) PARASITIZING GYPSY MOTH IN MAINE

1971 ◽  
Vol 103 (5) ◽  
pp. 654-656 ◽  
Author(s):  
David E. Leonard
Keyword(s):  
New England ◽  
Gypsy Moth ◽  
Pest Species ◽  
Natural Spread ◽  
Wide Range ◽  
Northern New England ◽  
Brachymeria Intermedia ◽  
Artificial Introduction

AbstractBrachymeria intermedia (Nees), an introduced parasite of the gypsy moth, was recovered from gypsy moth pupae collected in Fryeburg, Maine (latitude 44°). The recovery of this parasite in Maine shortly after it was reported established on gypsy moth in Connecticut suggests that B. intermedia is rapidly expanding its range. The wide range of hosts attacked by the parasite, and its occurrence in northern New England, make it a promising potential biotic agent on a variety of northern pest species of lepidopterans, either through natural spread or by artificial introduction.

Socio-ecological Systems Thinking

2016 ◽  
Author(s):  
Oswald J. Schmitz
Keyword(s):  
New England ◽  
Ecological Systems ◽  
Ecological System ◽  
Eastern Canada ◽  
Nonlinear Responses ◽  
Northern Cod ◽  
History Of ◽  
Northern New England ◽  
State Changes ◽  
Nested Hierarchy

This chapter examines how humans and nature can become increasingly entwined as a socio-ecological system. Northern cod stocks were once so plentiful in the waters off eastern Canada and northern New England. Five centuries later, the commercial northern cod fishery would collapse in dramatic fashion. To understand how the changes happened, the chapter divides the history of the northern cod fishery into four major periods of human engagement that began in 1500 and lasted until 1990. It also considers the development of new computational tools that have led to new principles that can help ecologists anticipate state changes in complex ecosystems and thereby better guide human engagement with nature's economy. Finally, it explains how the New Ecology can help us better understand the nested hierarchy and mechanisms of the inner workings of socio-ecological systems and the nonlinear responses that arise when they are disturbed or exploited.

Cyprinid distributions in Northeast U.S.A. lakes: evidence of regional-scale minnow biodiversity losses

1997 ◽  
Vol 54 (7) ◽  
pp. 1593-1607 ◽  
Author(s):  
T R Whittier ◽  
D B Halliwell ◽  
S G Paulsen
Keyword(s):  
New York ◽  
Species Richness ◽  
New England ◽  
Fish Assemblages ◽  
Regional Scale ◽  
Median Number ◽  
Southern New England ◽  
Sample Data ◽  
Golden Shiner ◽  
Northern New England

Fish assemblages were sampled in 195 randomly selected lakes in the northeastern United States during the summers of 1991-1994. Most lakes in northern Maine had three to seven minnow species, constituting 40-80% of species in each lake. Lakes in New Jersey, southern New York, and southern New England rarely had minnows, other than golden shiner (Notemigonus crysoleucas). Lakes in the Adirondacks and the remainder of northern New England had intermediate numbers. We examined minnow native ranges and autecology and evaluated species richness related to littoral predators and human disturbance. Sample data suggested alteration in the minnow assemblages over much of the region. The most consistent factor related to minnow species richness was the presence of littoral predators. Median number of minnow species was two in lakes lacking predators and zero in lakes with predators. Non-native predators, especially Micropterus spp., have been introduced throughout the Northeast; 69% of the sampled lakes had non-native predators. In the absence of predators, minnow species declined with increased human activity in the watershed and along lake shorelines. Only in northern Maine did lake minnow assemblages seem relatively intact.

Transborder interactions in the sawmill industry of Chaudière-Appalaches, Québec: A survey analysis

2003 ◽  
Vol 79 (5) ◽  
pp. 936-947
Author(s):  
Debra Straussfogel ◽  
Theodore Howard ◽  
Sylvain Masse ◽  
Difei Zhang
Keyword(s):  
New England ◽  
Management Strategies ◽  
Mail Survey ◽  
Raw Material ◽  
Business Success ◽  
Survey Analysis ◽  
The Us ◽  
Sawmill Industry ◽  
Northern New England ◽  
National Boundaries

The objectives of this mail survey of sawmills in the Chaudière-Appalaches region of southern Québec were (1) to establish the level of transborder interaction of these sawmills, with regard to wood sources and final markets; (2) to discover their perceptions of local versus international economic and business factors with regard to their business success; and (3) to examine the role and importance of the size of the sawmills in Chaudière-Appalaches relative to the nature of their engagement in either raw material import from or finished product export to the US. Our results demonstrate that a transborder forest economy exists and that the conception of "local" in transboundary regions must be flexible enough to permit resource management strategies, that, to some extent, ignore national boundaries. Key words: sawmill industry, transborder interaction, Chaudière-Appalaches, Québec, Northern New England

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