Demography of the endangered North Atlantic right whale

  title={Demography of the endangered North Atlantic right whale},
  author={Masami Fujiwara and Hal Caswell},
Northern right whales (Eubalaena glacialis) were formerly abundant in the northwestern Atlantic, but by 1900 they had been hunted to near extinction. After the end of commercial whaling the population was thought to be recovering slowly; however, evidence indicates that it has been declining since about 1990 (ref. 1). There are now fewer than 300 individuals, and the species may already be functionally extinct owing to demographic stochasticity or the difficulty of females locating mates in the… 

The recovery of North Atlantic right whales, Eubalaena glacialis, has been constrained by human-caused mortality

A population projection model for female NARW indicated an intrinsic rate of increase of 4% per year, approximately twice that observed, and that adult female mortality is the main factor influencing this rate.

Climate and the conservation biology of North Atlantic right whales: the right whale at the wrong time?

Demographic projections predict that the North Atlantic right whale population will become extinct in less than 200 years, and extrapolations suggest that reducing mortality rates by a few female deaths per year through conservation efforts would support a slow recovery of the population.

Sounding Depth with the North Atlantic Right Whale and Merleau- Ponty: An Exercise in Comparative Phenomenology

The North Atlantic right whale is an endangered species whose current population size is estimated to be between 350 and 400 individual animals. 2 North Atlantic right whales are primarily found off

Uncertain recovery of the North Atlantic right whale in a changing ocean

Human activities have placed populations of many endangered species at risk and mitigation efforts typically focus on reducing anthropogenic sources of mortality. However, failing to recognize the

NORTHERN RIGHT WHALE (Eubalaena glacialis): Western Atlantic Stock

STOCK DEFINITION AND GEOGRAPHIC RANGE Individuals of the western Atlantic northern right whale population range from wintering and calving grounds in coastal waters of the southeastern United States

NORTH ATLANTIC RIGHT WHALE (Eubalaena glacialis)

The western North Atlantic right whale population ranges primarily from calving grounds in coastal waters of the southeastern U.S. to feeding grounds in New England waters and the Canadian Bay of

State–space mark–recapture estimates reveal a recent decline in abundance of North Atlantic right whales

To better characterize changing abundance of North Atlantic right whales between 1990 and 2015, a state–space formulation with Jolly‐Seber assumptions about population entry and immigration to individual resighting histories was adapted and fit using empirical Bayes methodology.


The Committee on the Status of Endangered Wildlife in Canada (COSEWIC) evaluated the status of the right whale in 1980, and designated the species status as Endangered. At the time, the right whale

Climate-associated changes in prey availability drive reproductive dynamics of the North Atlantic right whale population

A prey-dependent model, which uses bi- monthly and geographically specific abundance anomalies of C. finmarchicus, significantly improves estimates of annual calf production relative to a null model, providing further evidence that the model captures essential features of right whale reproductive ecology.



Declining survival probability threatens the North Atlantic right whale.

Mark-recapture statistics to a catalog of photographically identified individuals were applied to obtain the first statistically rigorous estimates of survival probability for the North Atlantic northern right whale population, finding an upper bound on the expected time to extinction is 191 years.

Reproduction in North Atlantic right whales (Eubalaena glacialis)

The reproductive biology of the western North Atlantic right whale population was assessed using photoidentification techniques and there was an indication that calving intervals may be increasing over time, though the trend was not quite statistically significant.


North Atlantic right whale mortality rates range from 2% to 17% over the first four years of life. Sources of mortality in this population include ship collisions, entanglements, and natural causes.

Pod-specific demography of killer whales(Orcinus orca).

It is concluded that there is no evidence for an effect of social structure on pod-specific population growth rate, and the restriction of population growth rates to such a narrow range suggests, but does not prove, a possible role for density-dependent processes.

Predicting Calanus Finmarchicus Abundance from a Climatic Signal

  • B. PlanqueP. C. Reid
  • Environmental Science
    Journal of the Marine Biological Association of the United Kingdom
  • 1998
Long-term fluctuations in the abundance of the copepod Calanus finmarchicus in the north-east Atlantic are compared to the North Atlantic Oscillation index over the period 1958–1995. The strong

Modeling Survival and Testing Biological Hypotheses Using Marked Animals: A Unified Approach with Case Studies

This paper synthesizes, using a common framework, recent developments of capture-recapture models oriented to estimation of survival rates together with new ones, with an emphasis on flexibility in modeling, model selection, and the analysis of multiple data sets.

Estimating Transition Probabilities for Stage‐Based Population Projection Matrices Using Capture‐Recapture Data

In stage—based demography, animals are often categorized into size (or mass) classes, and size—based probabilities of surviving and changing mass classes must be estimated before demographic analyses

U.S. Atlantic and Gulf of Mexico marine mammal stock assessments--2002

1National Marine Fisheries Service, 166 Water St., Woods Hole, MA 02543 2National Marine Fisheries Service, 75 Virginia Beach Dr., Miami, FL 33149 3National Marine Fisheries Service, 219 Ft. Johnson

Applied Logistic Regression

Applied Logistic Regression, Third Edition provides an easily accessible introduction to the logistic regression model and highlights the power of this model by examining the relationship between a dichotomous outcome and a set of covariables.

Model selection and multimodel inference : a practical information-theoretic approach

The second edition of this book is unique in that it focuses on methods for making formal statistical inference from all the models in an a priori set (Multi-Model Inference). A philosophy is