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The Prairie Naturalist Volume 30, No. 3 September 1998 Sep 1998

The Prairie Naturalist Volume 30, No. 3 September 1998

The Prairie Naturalist

GROWTH OF SPOTIED BASS IN KANSAS STREAMS AND IMPOUNDMENTS ▪ J. S. Tillma and C. S. Guy

SIZE SELECTION OF RAINBOW SMELT BY SMALL MESH GILL NETS ▪ C. E. Freiburger and W. G. Duffy

ABUNDANCE AND HABITAT AFFINITIES OF Cyclotracheius substriatus (Coleoptera: Carabidae) ON NORTHERN SHORTGRASS PRAIRIE ▪ N. E. Mcintyre 157

THE REPRODUCTIVE BIOLOGY OF CANDLE ANEMONE ▪ B. Molano-Flores and S. D. Hendrix

NOTES

Noteworthy Records of Bats from Southern Colorado ▪ E. W. Valdez

Eggshell Removal by Duck Hens Following

Partial Nest Depredation by Striped Skunk ▪ S. Lariviere and L. R. Walton

New Records of …


Adopting An Ecosystem Approach: Local Variability In Remedial Action Planning, Wendy A. Kellogg Jul 1998

Adopting An Ecosystem Approach: Local Variability In Remedial Action Planning, Wendy A. Kellogg

All Maxine Goodman Levin School of Urban Affairs Publications

Provides information on a study that describes the adoption of an ecosystem approach by lead agencies in two remedial action plans (RAP) for Great Lakes basin. Guidelines on what an ecosystem approach is; Account on International Joint Commission (IJC); Congruency between RAP processes with IJC articulation; How variability in local conditions shaped the innovation adoption process.


Ecological Impacts Of The Proposed Reconstruction Of Ky 92 In Mccreary And Whitley Counties, Kentucky, Peggy A. Measel Apr 1998

Ecological Impacts Of The Proposed Reconstruction Of Ky 92 In Mccreary And Whitley Counties, Kentucky, Peggy A. Measel

Morehead State Theses and Dissertations

A thesis presented to the faculty of the College of Science and Technology at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science by Peggy A. Measel on April 29, 1998.


Improving Recovery Planning For Threatened And Endangered Species, Theodore C. Foin, Seth P. Riley, Anitra L. Pawley, Debra R. Ayres, Tina M. Carlsen, Peter J. Hodum, Paul V. Switzer Jan 1998

Improving Recovery Planning For Threatened And Endangered Species, Theodore C. Foin, Seth P. Riley, Anitra L. Pawley, Debra R. Ayres, Tina M. Carlsen, Peter J. Hodum, Paul V. Switzer

Faculty Research & Creative Activity

No abstract provided.


The Use Of Isoelectric Focusing To Assess The Genetic Diversity Of The Cyprinid Fishes: Rhinichthys Cataractae And Rhinichthys Atratulus In West Virginia, Fauzia Alam Miah Jan 1998

The Use Of Isoelectric Focusing To Assess The Genetic Diversity Of The Cyprinid Fishes: Rhinichthys Cataractae And Rhinichthys Atratulus In West Virginia, Fauzia Alam Miah

Theses, Dissertations and Capstones

In this study, isoelectric focusing is used to separate proteins of Rhinichthys cataractae and R. atratulus and conventional staining is used to identify alleles of six genes. The objective of this work is to determine whether these methods can effectively assay isozymes that may be used to establish the relationship between anthropogenic stress and genetic diversity. Alleles for LDH-A, LDH-B, EST-A, EST-B, EST-C, and EST-D loci were identified for two species of fish, R. atratulus and R. cataractae. Both fish species are known to be sensitive to anthropogenic stress and known to be widely distributed in stressed environments. Alleles …


An Ecology Problem Book, Marc Mangel, Paul Switzer, Sarah M. Eppley Jan 1998

An Ecology Problem Book, Marc Mangel, Paul Switzer, Sarah M. Eppley

Biology Faculty Publications and Presentations

This problem book has many objectives:

  • To get you to think about the course each night: do not wait until the last minute to begin working on the problems.
  • To get you to deal with data. Statistics courses that you take in the future will be more meaningful once you understand the kinds of data that arise in ecological studies.
  • To get you to be more comfortable with theoretical and quantitative methods. Not every ecologist uses those methods, but one should not be put off by them.
  • To familiarize you with material as it appears in the professional literature.


Interaction Between National Environmental Marketing Regulations And International Trade, Pirkko-Liis Harkmaa Jan 1998

Interaction Between National Environmental Marketing Regulations And International Trade, Pirkko-Liis Harkmaa

LLM Theses and Essays

The environmental marketing of goods and products have a substantial influence on the demand and supply. This thesis reviews the scope, advantages and disadvantages of diverse types of environmental marketing and further addresses the need for international regulations on eco-labeling programs. This thesis finds that there is a substantial connection between trade and environmental marketing which has resulted in the need for an international harmonization of eco-labeling strategies including the General Agreements on Tariffs and Trade (GATT). The thesis concludes with propositions for a uniform international standard on eco-labeling for the adoption of environmentally-sound best practices and the mitigation of …


Nest-Site Selection By Belted Kingfishers (Ceryle Alcyon) In Colorado, Sara Shields, Jeffrey F. Kelly Apr 1997

Nest-Site Selection By Belted Kingfishers (Ceryle Alcyon) In Colorado, Sara Shields, Jeffrey F. Kelly

Habitat Assessment and Management Collection

Along the Cache la Poudre River in northern Colorado, belted kingfishers nested in relatively tall banks that lacked a toe. Kingfishers constructed burrows in soils that contained significantly less sand than was present at systematically sampled points. This finding conflicts with earlier findings that indicate kingfishers select sandy soils for burrow construction. Otherwise, the physical characteristics of banks used by belted kingfishers in Colorado were similar to those found elsewhere.


A Reintroduction Technique For Migratory Birds: Leading Canada Geese And Isolation-Reared Sandhill Cranes With Ultralight Aircraft, William A. Lishman, Tighe L. Teets, Joseph W. Duff, William J. L. Sladen, Galvin G. Shire, Kirk M. Goolsby, Wayne A. Bezner Kerr, Richard Urbanek Jan 1997

A Reintroduction Technique For Migratory Birds: Leading Canada Geese And Isolation-Reared Sandhill Cranes With Ultralight Aircraft, William A. Lishman, Tighe L. Teets, Joseph W. Duff, William J. L. Sladen, Galvin G. Shire, Kirk M. Goolsby, Wayne A. Bezner Kerr, Richard Urbanek

Proceedings of the North American Crane Workshop

No successful method for establishing self-sustaining populations of whooping cranes (Grus americana), particularly in a migration situation, has been proven. This research initiated development of a reintroduction technique using ultralight aircraft to lead cranes from a natal area along a desired route to a predetermined wintering site. Canada geese (Branta canadensis) were used in initial migration efforts. Ultralight aircraft and pilots successfully led 86 juvenile geese on 3 southbound migrations from Ontario to winter sites 640-1,312 kIn from the natal area. Of 16 1993-hatched geese that survived their first winter in Virginia and 35 1994- hatched …


Agenda: Biodiversity Protection: Implementation And Reform Of The Endangered Species Act, University Of Colorado Boulder. Natural Resources Law Center Jun 1996

Agenda: Biodiversity Protection: Implementation And Reform Of The Endangered Species Act, University Of Colorado Boulder. Natural Resources Law Center

Biodiversity Protection: Implementation and Reform of the Endangered Species Act (Summer Conference, June 9-12)

Conference organizers and/or faculty included University of Colorado School of Law professors Betsy Rieke, David H. Getches, Michael A. Gheleta and Charles F. Wilkinson.

All across the country--in Congress, in state legislatures and in urban and rural communities--people are discussing why we should or should not protect biodiversity and how best to do so. Since the Endangered Species Act is up for reauthorization, a variety of reform proposals are being debated. Speakers--including natural resource scholars, experts from the private and nonprofit sectors, and government officials--will examine the rationale for biodiversity protection, the legal framework of the Endangered Species Act, and …


The Prairie Naturalist Volume 28, No. 2. June 1996 Jun 1996

The Prairie Naturalist Volume 28, No. 2. June 1996

The Prairie Naturalist

RAPTOR NESTING CHRONOLOGY IN NORTHWESTERN NORTH DAKOTA ▪ R. K. Murphy, and J. T. Ensign

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA -1995 ▪ R. N. Randall

YELLOW PERCH SPAWNING HABITATS IN PICKEREL LAKE, SOUTH DAKOTA ▪ S. J. Fisher, K. L Pope, L. J. Templeton, and D. W. Willis

ECOLOGY OF BOTRYCHIUM CAMPESTRE ON NORTHEASTERN lOWA GLADES ▪ J. C. Nekola, and D. W. Schlicht

REPRODUCTIVE BIOLOGY OF PURPLE CONEFLOWER IN SOUTHWESTERN NORTH DAKOTA ▪ H. K. Leuszler, V J. Tepedino, and D. G. Alston

BOOK REVIEWS

A Unique Group of Birds ▪ J. H. Schulz

Forest Ecology ▪ S. …


An Ecology Field Project Book, Marc Mangel, Paul Switzer, Sarah M. Eppley Jan 1996

An Ecology Field Project Book, Marc Mangel, Paul Switzer, Sarah M. Eppley

Biology Faculty Publications and Presentations

An ecological field project book, produced by the authors in conjunction with the University of California, Section of Evolution and Ecology and Center for Population Biology.


The Prairie Naturalist Volume 27, No.4 December 1995 Dec 1995

The Prairie Naturalist Volume 27, No.4 December 1995

The Prairie Naturalist

NEW DISTRIBUTIONAL RECORDS FOR MAMMALS IN KANSAS · D. W Sparks and J. R. Choate

CLAY-COLORED SPARROWS IN NORTH DAKOTA PARASITIZED BY BROWN-HEADED COWBIRDS ▪ G. P. Romig and R. D. Crawford

A NOTEWORTHY RECORD AND THE BREEDING DISTRIBUTION OF THE BLUE GROSBEAK IN NORTH DAKOTA ▪ L. D. Igl

NEAR LONGEVITY RECORD FOR THE SNOW GOOSE ▪ M T. Koenen and D. M. Leslie, Jr.

COMPARISON OF WATER CONSUMPTION BETWEEN TWO GRASSLAND EMBERIZIDS ▪ J. L. Zimmerman

FACTORS ASSOCIATED WITH DECLINING PROPORTION OF CITIZENS HUNTING IN SOUTH DAKOTA ▪ N. J. Dietz, K. F. Higgins, and R. D. Mendelsohn …


The Prairie Naturalist Volume 27, No.2. June 1995 Jun 1995

The Prairie Naturalist Volume 27, No.2. June 1995

The Prairie Naturalist

WILDLIFE MORTALITY ASSOCIATED WITH OIL PITS IN WYOMING ▪ B.J. Esmoil and S.H. Anderson

DRAMATIC INCREASE OF LE CONTE'S SPARROW IN CONSERVATION RESERVE PROGRAM FIELDS IN THE NORTHERN GREAT PLAINS ▪ LD. Igl and D.H. Johnson

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA - 1994 ▪ R.N. Randall

DESCRIPTIONS OF WALLEYE STOCKS IN HIGH-ELEVATION RESERVOIRS, WYOMING ▪ T.D. Marwitz and W A. Hubert

NEW VASCULAR PLANT RECORDS FOR THE BLACK HILLS OF SOUTH DAKOTA AND WYOMING • G.E. Larson and J.R. Johnson

NOTES

A New Population of Small White Lady's-Slipper (Cypripedium candidum) in South Dakota ▪ S.E. Boettcher

Sandhill …


Green River Foodweb: Colorado Squawfish Nursery Habitat Near Ouray National Wildlife Refuge, Utah, Linden Hamer Alder May 1995

Green River Foodweb: Colorado Squawfish Nursery Habitat Near Ouray National Wildlife Refuge, Utah, Linden Hamer Alder

Undergraduate Honors Capstone Projects

Effects of fish introductions are relatively well studied in lentic habitats, and apparently range from extremely disruptive to notably benign (Kruegger and May 1991). Though researched less completely, fish introductions may also alter native faunas in lotic habitats. Ptychocheilus lucius, commonly known as the Colorado squawfish (C. squawfish), is a fish species endemic to the Colorado river system. The population is currently experiencing dramatically reduced recruitment successes relative to historical rates. Introduced fishes such as channel catfish, smallmouth bass, and green sunfish are prevalent in the Upper Colorado River. The introduced fish presence is increasingly suspected by researchers as a …


Collaborative Multimedia, Judy Diamond, Alan B. Bond, Beth Schenker, Debra Meier, Dana Twersky Jan 1995

Collaborative Multimedia, Judy Diamond, Alan B. Bond, Beth Schenker, Debra Meier, Dana Twersky

Alan Bond Publications

Six natural history institutions contributed video and other images to produce a single multimedia exhibit about famous paleontology sites throughout the United States. In Mesozoic Monsters. Mammals and Magnolias users can view videos of the original excavation of each of the sites and also play computer games relating to each location. This project provides a model for how collaboration among museums can reduce the cost of multimedia exhibits while improving quality and making them available to wider audiences.


The Prairie Naturalist Volume 26, No. 4. December 1994 Dec 1994

The Prairie Naturalist Volume 26, No. 4. December 1994

The Prairie Naturalist

REPRODUCTION OF RING-NECKED PHEASANTS IN IOWA ▪ T Z. Riley, J. B. Wooley, Jr. , and W. B. Rybarczyk

DIETARY COMPARISONS OF ADULT MALE COMMON GRACKLES, RED-WINGED BLACKBIRDS, AND YELLOW-HEADED BLACKBIRDS IN NORTH CENTRAL NORTH DAKOTA ▪ H. J. Homan, GM. Linz, W. J. Bleier, and R. B. Carlson

ECOGEOGRAPHY OF SOUTHERN BOG LEMMING AND MEADOW VOLE IN NORTH CENTRAL KANSAS ▪ T. L. Welker and J. R. Choate

SUMMER AND FALL FOOD HABITS OF COYOTES IN SOUTHWESTERN NORTH DAKOTA ▪ T. L. Lewis, W. F. Jensen, K. A. Keehr, and R. W. Seabloom

MOVEMENT PATTERNS OF WHITE-TAILED DEER AT …


The Ohlone And The Oak Woodlands: Cultural Adaptation In The Santa Clara Valley, Grant William Schick Jan 1994

The Ohlone And The Oak Woodlands: Cultural Adaptation In The Santa Clara Valley, Grant William Schick

Research Manuscript Series

Today, Santa Clara Valley consists of a modern industrialized environment distinguished by concrete, pavement and automobiles. These "innovations" made by modern technology began only recently. The environment and ecology of 200 years ago was extremely different from ours today. Filled with many native habitats, it thrived through the inter-dependance of all plant and animal species. In this study, I examine the characteristics of Santa Clara Valley in centuries past and today, in order to understand the vast number of resources which were available to the native inhabitants of the Santa Clara Basin. This paper has its base in cultural ecology, …


Predicting The Past, Recounting The Future: Human Ecology And A Prehistory Of Consciousness, Paul Faulstich Jan 1994

Predicting The Past, Recounting The Future: Human Ecology And A Prehistory Of Consciousness, Paul Faulstich

Pitzer Faculty Publications and Research

This paper is concerned with the organic derivation and primary meaning of Pleistocene finger flutings; I propose that in order to gain insight into the significance of the flutings, we must attempt an understanding of the physical and mental contexts in which they emerged. I suggest that finger flutings provided a cultural record in the Pleistocene which documented thought and action, and made it ready for reflection. Through the process of finger fluting, the human 'self' was objected and reality was modified in the experience of self-consciuosness. I argue that finger flutings, like language, were employed to discover and convey …


Phytoplankton Assemblages Associated With A Bloom Of Ptychodiscus Brevis Off The North Carolina Coast, Traycie Lea West Jul 1993

Phytoplankton Assemblages Associated With A Bloom Of Ptychodiscus Brevis Off The North Carolina Coast, Traycie Lea West

Biological Sciences Theses & Dissertations

A bloom of the dinoflagellate Ptychodiscus brevis occurred off the North Carolina coast in late 1987, and samples were forwarded by NOAA to the Old Dominion University Phytoplankton Laboratory for total phytoplankton analysis. Six sampling stations were chosen to represent different bloom scenarios and these six were clustered into three site groups based on the concentrations of statistically significant taxa. Abundances of phytoplankton taxonomic groups over time were examined in relation to P. brevis concentrations to identify any general tendencies. These results indicated the total phytoplankton concentration, and most taxonomic groups, increased at all three site groups regardless of the …


Phytoplankton Community Abundance And Diversity In Dardanelle Reservoir, Arkansas, 1981-1990, John D. Rickett, Robert L. Watson Jan 1992

Phytoplankton Community Abundance And Diversity In Dardanelle Reservoir, Arkansas, 1981-1990, John D. Rickett, Robert L. Watson

Journal of the Arkansas Academy of Science

Phytoplankton samples were collected quarterly from 1981-1990 at five stations representing discharge water from Arkansas Nuclear One, a nuclear generating station, and four "control" or "dispersal evaluation" stations. Seventy-five taxa representing five divisions were identified and enumerated. Community structure was evaluated using abundances, number of taxa, and Margalef's Richness, Shannon's Heterogeneity and Pielou's Evenness indices. No long-term trends were identified, but the beginning of cyclic variations, with a 7-year periodicity, in abundance, number of taxa, and Shannon's and Pielou's indices were apparent. Margalef's index values were constant during most of the study period. For all samples, t-tests and Mann-Whitney U …


Zooplankton Community Abundance And Diversity In Dardanelle Reservoir, Arkansas, 1981-1990, John D. Rickett, Robert L. Watson Jan 1992

Zooplankton Community Abundance And Diversity In Dardanelle Reservoir, Arkansas, 1981-1990, John D. Rickett, Robert L. Watson

Journal of the Arkansas Academy of Science

Zooplankton samples were collected quarterly from five stations representing the discharge bay and four "control" or "dispersing impact" stations. Rotifers dominated all samples numerically and by the number of taxa. All major groups (Rotifera, Cladocera, Copepoda, and Protozoa) exhibited greatest abundances during the summer. Quarterly variations in abundance and number of taxa were documented. Except for an increase in taxonomic analysis detail between 1981 and 1984 resulting in several more taxa added to the list, no long-term increases, declines or repeating cycles were apparent. Margalef's Richness Index reflected this change and showed a long-term increase with evidence of a 5- …


United Conservation Alliance, Laurence R. Jahn Oct 1991

United Conservation Alliance, Laurence R. Jahn

Wildlife Damage Management Conference

We gather here and reflect on successes in wildlife conservation, restoration, and management; and make plans for more beneficial actions. Significant achievements have been made in public education and wildlife management, as shown by increases in some wildlife populations. But a continuing pressing challenge involves responding to some wildlife population declines, as well as wildlife damage and nuisance situations, as the human population increases and dominates the landscape.


The Prairie Naturalist Volume 23, No. 3. September 1991 Sep 1991

The Prairie Naturalist Volume 23, No. 3. September 1991

The Prairie Naturalist

Paul B. Kannowski, Editor

Nikki R. Seabloom, Assistant Editor

Douglas H. Johnson, Book Review Editor

CONTENTS

ANTIPREDATOR BEHAVIOR OF MOUNTAIN PLOVER CHICKS ▪ T A. Sordahl

USING AERIAL MARKING FOR ASSESSING POPULATION DYNAMICS OF LATE SUMMER ROOSTING RED-WINGED BLACKBIRDS ▪ C. M. Linz, C. E. Knittle, J. L. Cummings, J. E. Davis, Jr. , D. L. Otis, and D. L. Bergman

DISPERSAL OF THE MEADOW JUMPING MOUSE IN NORTHERN KANSAS ▪ J. R. Choate, D. W. Moore, and J. K. Frey

DIET, HOME RANGE, MOVEMENTS, AND ACTIVITY PERIODS OF SWIFT FOX IN NEBRASKA ▪ T D. Hines and R. M. …


An Autecological Study Of Pyxidanthera Barbulata In The Blackwater Ecologic Preserve Virginia, John Marc Lowenthal Jul 1990

An Autecological Study Of Pyxidanthera Barbulata In The Blackwater Ecologic Preserve Virginia, John Marc Lowenthal

Biological Sciences Theses & Dissertations

Pyxidanthera barbulata (pyxie moss), a rare and endangered subshrub, has been found in decreasing numbers in it's "pine barren" habitat. An autecological study encompassing vegetation association analysis and environmental measurements was performed in the Blackwater Ecologic Preserve, its only known location in Virginia. The preserve is being subjected to controlled burning and the effect of burning on the species was evaluated. A multivariate analysis of variance was performed to identify species associations, and simple analysis of variance was done to find trends in the environmental data. Four taxa were positively associated with P. barbulata, Gaultheria procumbens, Vaccinium tenellum, Cladonia spp., …


Fisheries Research Report No. 92 - Spread Of The Introduced Yabbie Cherax Albidus Clark, 1936 In Western Australia, N. M. Morrissy, G. Cassells Jan 1990

Fisheries Research Report No. 92 - Spread Of The Introduced Yabbie Cherax Albidus Clark, 1936 In Western Australia, N. M. Morrissy, G. Cassells

Fisheries Research Reports

This report presents information on the probable original introduction of the eastern Australian yabbie to farm dams in the Wheat-belt Region of the southwest of Western Australia (in 1932 at Narembeen); the probable type of yabbie (the "White Yabby", Cherax albidus Clark 1936 ) and source (Miram Swamp in the Victorian Wimmera); and, in 1985, the first voicing of concern over the spread of yabbies to natural habitats, particularly in the higher rainfall region of the southwest, together with current national and international concerns and advice on introduced aquatic species.

Commercial harvesting ("extensive" aquaculture) of existing yabbie stocks in wheat-belt …


The Prairie Naturalist Volume 21, No.4 December 1989 Dec 1989

The Prairie Naturalist Volume 21, No.4 December 1989

The Prairie Naturalist

SMALL MAMMALS IN TALL-GRASS PRAIRIE: PATTERNS ASSOCIATED WITH GRAZING AND BURNING ▪ E. K. Clark, D. W. Kaufman, E. J. Finck, and G. A. Kaufman

BURROW DISTRIBUTION OF THIRTEEN-LINED GROUND SQUIRRELS IN RELATION TO TREE CANOPIES ▪ J. L. Koprowski 185

SPRING AND SUMMER PREY REMAINS COLLECTED FROM MALE MINK DENS IN SOUTHWESTERN MANITOBA ▪ . T. W. Arnold and E. K. Fritzell

BREEDING CANVASBACKS: A TEST OF A HABITAT MODEL ▪ D. H. Johnson, M. C. Hammond, T. L. McDonald, C. L. Nustad, and M. D. Schwartz

A CHECKLIST OF THE ANTS OF OKLAHOMA ▪ G. C. Wheeler and …


Survey And Reconnaissance Of Sea Turtles In The Northern Gulf Of Mexico, Larry Ogren Jan 1989

Survey And Reconnaissance Of Sea Turtles In The Northern Gulf Of Mexico, Larry Ogren

United States Department of Commerce: Staff Publications

This is a report on the results of an aerial survey of nesting beaches conducted during the period from May 16, 1977 to August 11, 1977. The area covered included the barrier beaches and offshore islands from the Florida-Alabama state line to the Rio Grande, Texas. Additional historical information is provided in order to compare current nesting activity with previous years as well as anecdotal observations on the occurrence of sea turtles in this region.


Front Matter, Elephant Editors Dec 1987

Front Matter, Elephant Editors

Elephant

No abstract provided.


The Prairie Naturalist Volume 19, No. 4. December 1987 Dec 1987

The Prairie Naturalist Volume 19, No. 4. December 1987

The Prairie Naturalist

Paul B. Kannowski, Editor

Nikki R. Seabloom, Assistant Editor

Douglas H. Johnson, Book Review Editor

TABLE OF CONTENTS

BREEDING BIRDS AND VEGETATION STRUCTURE IN WESTERN NORTH DAKOTA WOODED DRAWS ▪ C. A. Faanes

PRODUCTIVITY OF RED-WINGED BLACKBIRDS IN SOUTH DAKOTA ▪ J. F. Besser, O. E. Bray, J. W. De Grazio, J. L. Guarino, D. L. Gilbert, R. R. Martinka, and D. A. Bysart

DENSITY AND DISTRIBUTION OF THE MOUNTAIN PLOVER ON THE CHARLES M. RUSSELL NATIONAL WILDLIFE REFUGE ▪ S. L. Olson-Edge and W. D. Edge

EFFECT OF CALCULATION TECHNIQUE ON THE ESTIMATION OF LEAF AREA IN A MIXED …