Comparison of Population Energy Flow of a Herbivorous and a Deposit-feeding Invertebrate in a Salt Marsh Ecosystem.

نویسندگان

  • E P Odum
  • A E Smalley
چکیده

38 Lorente de N6, R., "A Study of Nerve Physiology," Studies from the Rockefeller Institute for Medical Research, 131, 132 (1947). 39 Rudolph, G., "Zur Physiologie der Impulsentstehung und Impulsfortleitung im peripheren Nerven," Ann. Univ. Saraviensis, 4, 1 (1956). 40 Lloyd, D. P. C., "Post-tetanic Potentiation of Response in Monosynaptic Reflex Pathways of the Spinal Cord," J. Gen. Physiol., 33, 1947 (1949). 41 Lloyd, D. P. C., "Early and Late Post-tetanic Potentiation, and Post-tetanic Block in a Monosynaptic Reflex Pathway," J. Gen. Physiol., 42, 475 (1959). 42 Lorente de N6, R., "Transmission of Impulses Through Cranial Motor Nuclei," J. Neurophysiol., 2, 402 (1939). 43 Lorente de N6, R., "Action Potentials of the Motoneurons of the Hypoglossus Nucleus" J. Cell and Comp. Physiol., 29, 207 (1947). 44 Coombs, J. S., D. R., Curtis, and J. C. Eccles, "The Generation of Impulses in Motoneurons," J. Physiol., 139, 232 (1957). 45 Renshaw, B., "Effects of Presynaptic Volleys on Spread of Impulses Over the Soma of the Motoneurons," J. Neurophysiol., 5, 235 (1942). 46 Eccles, J. C., B. Libet, and R. R. Young, "The Behavior of Chromatolized Motoneurons Studied by Intracellular Recording," J. Physiol., 143, 11 (1958). 47 Lloyd, D. P. C., "A Direct Central Inhibitory Action of Dromically Conducted Impulses," J. Neurophysiol., 4, 184 (1941). 4 Gasser, H. S., "Reciprocal Innervation," in Vol. jubil. publ. en l'honneur du Prof. J. Demoor, (Libge: 1937), 212. 49 Lindblom, U. F., "Excitability and Functional Organization within a Peripheral Tactile Unit," Acta Physiol. Scand., Suppl. 153 (1958).

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Direct and indirect trophic effects of predator depletion on basal trophic levels.

Human population growth and development have heavily degraded coastal ecosystems with cascading impacts across multiple trophic levels. Understanding both the direct and indirect trophic effects of human activities is important for coastal conservation. In New England, recreational overfishing has triggered a regional trophic cascade. Predator depletion releases the herbivorous purple marsh cra...

متن کامل

Ecosystem assembly rules: the interplay of green and brown webs during salt marsh succession.

Current theories about vegetation succession and food web assembly are poorly compatible, as food webs are generally viewed to be static, and succession is usually analyzed without the inclusion of higher trophic levels. In this study we present results from a detailed analysis of ecosystem assembly rules over a chronosequence of 100 years of salt marsh succession. First, using 13 yearlong obse...

متن کامل

A trophic cascade triggers collapse of a salt-marsh ecosystem with intensive recreational fishing.

Overexploitation of predators has been linked to the collapse of a growing number of shallow-water marine ecosystems. However, salt-marsh ecosystems are often viewed and managed as systems controlled by physical processes, despite recent evidence for herbivore-driven die-off of marsh vegetation. Here we use field observations, experiments, and historical records at 14 sites to examine whether t...

متن کامل

Herbivory Drives the Spread of Salt Marsh Die-Off

Salt marsh die-off is a Western Atlantic conservation problem that has recently spread into Narragansett Bay, Rhode Island, USA. It has been hypothesized to be driven by: 1) eutrophication decreasing plant investment into belowground biomass causing plant collapse, 2) boat wakes eroding creek banks, 3) pollution or disease affecting plant health, 4) substrate hardness controlling herbivorous cr...

متن کامل

Experimental predator removal causes rapid salt marsh die-off

Salt marsh habitat loss to vegetation die-offs has accelerated throughout the western Atlantic in the last four decades. Recent studies have suggested that eutrophication, pollution and/or disease may contribute to the loss of marsh habitat. In light of recent evidence that predators are important determinants of marsh health in New England, we performed a total predator exclusion experiment. H...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Proceedings of the National Academy of Sciences of the United States of America

دوره 45 4  شماره 

صفحات  -

تاریخ انتشار 1959