au.\*:("VAN DER VALK AG")
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SUCCESSION IN WETLANDS: A GLEASONIAN APPROACHVAN DER VALK AG.1981; ECOLOGY; ISSN 0012-9658; USA; DA. 1981; VOL. 62; NO 3; PP. 688-696; BIBL. 38 REF.Article
ZONATION, COMPETITIVE DISPLACEMENT AND STANDING CROP OF NORTHWEST IOWA FEN COMMUNITIES.VAN DER VALK AG.1976; PROC. IOWA ACAD. SCI.; U.S.A.; DA. 1976; VOL. 83; NO 2; PP. 51-54; BIBL. 33 REF.Article
MINERAL CYCLING IN COASTAL FOREDUNE PLANT COMMUNITIES IN CAPE HATTERAS NATIONAL SEASHORE = CYCLE DES COMPOSES MINERAUX DANS DES ASSOCIATIONS VEGETALES DES PREMIERES DUNES COTIERES SUR LE LITTORAL NATIONAL DE CAP HATTERASVAN DER VALK AG.1974; ECOLOGY; U.S.A.; DA. 1974; VOL. 55; NO 6; PP. 1349-1358; BIBL. 29REF.Article
THE MACROCLIMATE AND MICROCLIMATE OF COASTAL FOREDUNE GRASSLANDS IN CAPE HATTERAS NATIONAL SEASHORE.VAN DER VALK AG.1977; INTERNATION. J. BIOMETEOROL.; NETHERL.; DA. 1977; VOL. 21; NO 3; PP. 227-237; BIBL. 1 P.Conference Paper
FLORISTIC COMPOSITION AND STRUCTURE OF FEN COMMUNITIES IN NORTHWEST IOWA = COMPOSITION FLORISTIQUE ET STRUCTURE DES ASSOCIATIONS DE MARECAGE DANS LE NORD-OUEST DE IOWAVAN DER VALK AG.1975; PROC. IOWA ACAD. SCI.; U.S.A.; DA. 1975; VOL. 82; NO 2; PP. 113-118; BIBL. 36REF.Article
THE ROLE OF SEED BANKS IN THE VEGETATION DYNAMICS OF PRAIRIE GLACIAL MARSHESVAN DER VALK AG; DAVIS CB.1978; ECOLOGY; USA; DA. 1978; VOL. 59; NO 2; PP. 322-335; BIBL. 28 REF.Article
UPTAKE AND RELEASE OF NUTRIENTS BY LIVING AND DECOMPOSING TYPHA GLAUCA GODR. TISSUES AT EAGLE LAKE, IOWADAVIS CB; VAN DER VALK AG.1983; AQUATIC BOTANY; ISSN 0304-3770; NLD; DA. 1983; VOL. 16; NO 1; PP. 75-89; BIBL. 21 REF.Article
THE DECOMPOSITION OF STANDING AND FALLEN LITTER OF TYPHA GLAUCA AND SEIRPUS FLUVIATILIS.DAVIS CB; VAN DER VALK AG.1978; CANAD. J. BOT.; CANADA; DA. 1978; VOL. 56; NO 6; PP. 662-675; ABS. FR.; BIBL. 29 REF.Article
A CHECKLIST OF THE AQUATIC AND WETLAND VASCULAR PLANTS OF IOWA: I. FERNS, FERN ALLIES AND DICOTYLEDONS.LAMMERS TG; VAN DER VALK AG.1977; PROC. IOWA ACAD. SCI.; U.S.A.; DA. 1977; VOL. 84; NO 2; PP. 41-88; BIBL. 1 P.Serial Issue
THE IMPACT OF A NATURAL DRAWDOWN ON THE GROWTH OF FOUR EMERGENT SPECIES IN A PRAIRIE GLACIAL MARSHVAN DER VALK AG; DAVIS CB.1980; AQUAT. BOT.; ISSN 0304-3770; NLD; DA. 1980; VOL. 9; NO 4; PP. 301-322; BIBL. 20 REF.Article
CHANGES IN THE COMPOSITION, STRUCTURE, AND PRODUCTION OF PLANT COMMUNITIES ALONG A PERTURBED WETLAND COENOCLINE.VAN DER VALK AG; DAVIS CB.1976; VEGETATIO; PAYS-BAS; DA. 1976; VOL. 32; NO 2; PP. 87-96; BIBL. 31 REF.Article
A RECONSTRUCTION OF THE RECENT VEGETATIONAL HISTORY OF A PRAIRIE MARSH. EAGLE LACK, IOWA, FROM ITS SEED BANKVAN DER VALK AG; DAVIS CB.1979; AQUAT. BOT.; NLD; DA. 1979; VOL. 6; NO 1; PP. 29-51; BIBL. 30 REF.Article
A CHECKLIST OF THE AQUATIC AND WETLAND VASCULAR PLANTS OF IOWA. II: MONOCOTYLEDONS PLUS A SUMMARY OF THE GEOGRAPHIC AND HABITAT DISTRIBUTION OF ALL AQUATIC AND WETLAND SPECIES IN IOWALAMMERS TG; VAN DER VALK AG.1978; PROC. IOWA ACAD. SCI.; USA; DA. 1978; VOL. 85; NO 4; PP. 121-163; BIBL. 2 P.Serial Issue
THE SEED BANKS OF PRAIRIE GLACIAL MARSHES.VAN DER VALK AG; DAVIS CB.1976; CANAD. J. BOT.; CANADA; DA. 1976; VOL. 54; NO 15; PP. 1832-1838; BIBL. 20 REF.Article
THE RESPONSE OF PLANT SPECIES OF BURIAL IN THREE TYPES OF ALASKAN WETLANDSVAN DER VALK AG; SWANSON SD; NUSS RF et al.1983; CANADIAN JOURNAL OF BOTANY; ISSN 0008-4026; CAN; DA. 1983; VOL. 61; NO 4; PP. 1150-1164; ABS. FRE; BIBL. 14 REF.Article
THE ROLE OF FOUR MACROPHYTE SPECIES IN THE REMOVAL OF NITROGEN AND PHOSPHORUS FROM NUTRIENT-RICH WATER IN A PRAIRIE MARSH, IOWADAVIS CB; VAN DER VALK AG; BAKER JL et al.1983; MADRONO; ISSN 0024-9637; USA; DA. 1983; VOL. 30; NO 3; PP. 133-142; BIBL. 2 P.Article