The Ecology of Morecambe Bay. VII. The Distribution of Puccinellia maritima, Festuca rubra and Agrostis stolonifera in the Salt Marshes

1977 ◽  
Vol 14 (1) ◽  
pp. 229 ◽  
Author(s):  
A. J. Gray ◽  
R. Scott
Keyword(s):  
Salt Marshes ◽  
Agrostis Stolonifera ◽  
Festuca Rubra

Morphological and leaf anatomical variation in Festuca rubra sensu lato (Poaceae) from eastern Quebec

1987 ◽  
Vol 65 (6) ◽  
pp. 1065-1077 ◽  
Author(s):  
Martin Dubé ◽  
Pierre Morisset
Keyword(s):  
Salt Marshes ◽  
Anatomical Variation ◽  
Similarity Analysis ◽  
Festuca Rubra ◽  
Classification Problems ◽  
Geographical Factors ◽  
Variation Patterns ◽  
Character Variation ◽  
Anatomical Characters ◽  
Weak Structure

The variation of 52 morphological and anatomical characters was analysed in 32 populations of Festuca rubra L. sensu lato from salt marshes, coastal rocks, coastal sands, and anthropogenic sites in eastern Quebec. The results show that the variation of characters is essentially continuous within and between populations, that some populations are much more variable than others, and that on the whole, character variation patterns are mainly related to ecological rather than geographical factors. The weak structure revealed by a similarity analysis of populations is the source of the classification problems within this species.

La plasticité phénotypique des caractères anatomiques foliaires chez le Festuca rubra L. (Pcaceae)

1996 ◽  
Vol 74 (11) ◽  
pp. 1708-1718 ◽  
Author(s):  
Martin Dubé ◽  
Pierre Morisset
Keyword(s):  
Phenotypic Plasticity ◽  
Analysis Of Variance ◽  
Leaf Anatomy ◽  
Salt Marshes ◽  
Festuca Rubra ◽  
Transplantation Experiment ◽  
Plasticité Phénotypique ◽  
Almost All

The phenotypic plasticity of nine anatomical leaf characters of Festuca rubra was studied through a transplantation experiment. Twelve genotypes from four habitats (salt marshes, coastal rocks, coastal sands, and ruderal places) were submitted to five treatments in a garden. An analysis of variance shows that almost all these characters were modified by treatments. Nevertheless, in most cases, the greatest part of the variation observed was genetic rather than plastic. Morever, it appears that genotypes responded quite differently to the treatments. The use of these characters in the taxonomy of F. rubra is discussed. Keywords: Festuca rubra, leaf anatomy, phenotypic plasticity.

Increasing Tolerance Agrostis Stolonifera, Festuca Rubra, Brachycome Iberidifolia, Chrysanthemum Carinatum to Copper

2018 ◽  
pp. 167-174
Author(s):  
Evgen Aleksandrovich Gladkov ◽  
Ilina Igorevna Tashlieva ◽  
Yuliya Ivanovna Dolgikh ◽  
Olga Victorovna Gladkova
Keyword(s):  
Agrostis Stolonifera ◽  
Festuca Rubra

Coexistence, Stress, and Catastrophe, in Grassy Vegetation Established in a Hard-limestone Quarry

1988 ◽  
Vol 15 (3) ◽  
pp. 233-238 ◽  
Author(s):  
Jean M. Dixon ◽  
David J. Hambler
Keyword(s):  
Plant Communities ◽  
Agrostis Stolonifera ◽  
Festuca Rubra ◽  
Heavy Vehicles ◽  
Clear Pattern ◽  
Limestone Quarry ◽  
Stable Coexistence ◽  
Directional Change ◽  
Regeneration Niches

Plant communities produced experimentally in twometres' square plots on the rubble-covered floor of a limestone quarry showed changes in the cover values that were attributable to the sown grass and to immigrant mosses over a period of three years. Cover values for the mosses were lower in summer than in the following autumn over two cycles, whilst the cover that was attributable to the sown grass, a non-rhizomatous cultivar of Festuca rubra, did not follow a clear pattern. No evidence of directional change was found; this suggests a stable coexistence of the grass with mosses. It is suggested that one property of such a community will be a differentiation of regeneration niches which are favourable to an increase of diversity through immigration.Episodic persistent flooding and consequent deposition of colloidal limestone on well-established and diversifying vegetation, followed by a single catastrophic incident of compression by the tyres of heavy vehicles, resulted in the loss of F. rubra and mosses, and the ascendency of a perennial survivor (Agrostis stolonifera).

Urbanization impacts on production and recruitment of Fundulus heteroclitus in salt marsh creeks

2020 ◽  
Vol 645 ◽  
pp. 187-204
Author(s):  
PJ Rudershausen ◽  
JA Buckel
Keyword(s):  
Salt Marsh ◽  
Salt Marshes ◽  
Fundulus Heteroclitus ◽  
Multiple Factor Analysis ◽  
Southeastern Usa ◽  
Density Dependent ◽  
Dependent Relationship ◽  
Juvenile Abundance ◽  
The Relationship ◽  
Throw Trap

It is unclear how urbanization affects secondary biological production in estuaries in the southeastern USA. We estimated production of larval/juvenile Fundulus heteroclitus in salt marsh areas of North Carolina tidal creeks and tested for factors influencing production. F. heteroclitus were collected with a throw trap in salt marshes of 5 creeks subjected to a range of urbanization intensities. Multiple factor analysis (MFA) was used to reduce dimensionality of habitat and urbanization effects in the creeks and their watersheds. Production was then related to the first 2 dimensions of the MFA, month, and year. Lastly, we determined the relationship between creek-wide larval/juvenile production and abundance from spring and abundance of adults from autumn of the same year. Production in marsh (g m-2 d-1) varied between years and was negatively related to the MFA dimension that indexed salt marsh; higher rates of production were related to creeks with higher percentages of marsh. An asymptotic relationship was found between abundance of adults and creek-wide production of larvae/juveniles and an even stronger density-dependent relationship was found between abundance of adults and creek-wide larval/juvenile abundance. Results demonstrate (1) the ability of F. heteroclitus to maintain production within salt marsh in creeks with a lesser percentage of marsh as long as this habitat is not removed altogether and (2) a density-dependent link between age-0 production/abundance and subsequent adult recruitment. Given the relationship between production and marsh area, natural resource agencies should consider impacts of development on production when permitting construction in the southeastern USA.

Evaluation of mineral fertilizer effects in a long-term experiment on a planted sward

2010 ◽  
Vol 59 (2) ◽  
pp. 295-314 ◽  
Author(s):  
Imre Kádár
Keyword(s):  
Festuca Arundinacea ◽  
Dactylis Glomerata ◽  
Mineral Fertilizer ◽  
Phleum Pratense ◽  
Agropyron Cristatum ◽  
Festuca Rubra ◽  
Festuca Pratensis ◽  
Term Experiment ◽  
Long Term Experiment

Egy műtrágyázási tartamkísérlet 32. évében, 2005-ben vizsgáltuk az eltérő N-, P- és K-ellátottsági szintek és kombinációik hatását a réti csenkesz (Festuca pratensis) vezérnövényű, nyolckomponensű, pillangós nélküli gyepkeverék termésére, fejlődésére és elemtartalmára. A termőhely mészlepedékes csernozjom talaja a szántott rétegben mintegy 3% humuszt, 3–5% CaCO3-ot és 20–22% agyagot tartalmazott, N és K elemekben közepesen, P és Zn elemekben gyengén ellátottnak minősült. A kísérlet 4N×4P×4K = 64 kezelést×2 ismétlést = 128 parcellát foglalt magában. A talajvíz 13–15 m mélyen helyezkedik el, a terület aszályérzékeny. A vizsgált 2005. évben azonban kielégítő mennyiségű (649 mm) csapadék hullott és annak eloszlása is kedvező volt. A gyep telepítése spenót elővetemény után 2000. szeptember 20-án történt gabona sortávra 60 kg·ha–1 vetőmaggal, amelynek 25%-át (15 kg) a réti csenkesz (Festuca pratensis); 21–21%-át (12,6 kg) a nádképű csenkesz (Festuca arundinacea) és az angol perje (Lolium perenne); 9%-át (5,4 kg) a taréjos búzafű (Agropyron cristatum), valamint 6–6%-át (3,6 kg) a vörös csenkesz (Festuca rubra), a réti komócsin (Phleum pratense), a zöld pántlikafű (Phalaris arundinacea) és a csomós ebír (Dactylis glomerata) tette ki. Főbb eredményeink: – A meghatározó N-trágyázás nyomán a szénatermés 5-szörösére emelkedett a két kaszálással a N-kontrollhoz viszonyítva. A maximális 10 t·ha–1 körüli légszáraz szénahozamokat a 300 kg N·ha–1·év–1 N-adag, valamint a 150 mg·kg–1 körüli AL-P2O5-, illetve 150 mg·kg–1 feletti AL-K2O-tartalom biztosította. Növénydiagnosztikai szempontból a nagy terméshez kötődő optimális elemtartalom 2% körüli N- és K-, illetve 0,2–0,3% P-koncentráció volt a szénában. – A két kaszálással felvett minimum (a 2 t·ha–1 körüli szénatermést adó N-kontroll) és maximum (a 10 t·ha–1 körüli szénahozamú, nitrogénnel és PK-vel jól ellátott talajok) elemmennyiségek a következőképpen alakultak: N 21–196 kg, K 39–188 kg, Ca 9–48 kg, Mg 4–22 kg, P 6–21 kg. – Az N×P és N×K kölcsönhatások kifejezettebbé váltak a 2. kaszálás idején. A P 0,18–0,55%, a NO3-N 86–1582 mg·kg–1, a Cu 4,7–7,4 mg·kg–1, a Mo 0,7–4,1 mg·kg–1 extrém értékeket jelzett az N×P kezelések függvényében. Az N×K kezelésekben a K 1,44–2,73%, a Mg 0,26–0,39%, a Na 71–2178 mg·kg–1, a Ba 4,1–9,6 mg·kg–1, a Cd 15–44 µg·kg–1 szélsőértékekkel volt jellemezhető. A Sr a 10–26 mg·kg–1 koncentrációtartományban módosult a P×K-ellátottság nyomán. Élettani, takarmányozástani szempontból az indukált kölcsönhatások nyomon követése elengedhetetlen, amennyiben olyan mérvű tápelemhiányok, illetve aránytalanságok jöhetnek létre, melyek anyagcserezavarokat okozhatnak a növényt fogyasztó állatban.

Cyanoprokaryota of the Salt Marshes at the Pryazov National Natural Park, Ukraine

2019 ◽  
Vol 21 (4) ◽  
pp. 299-310 ◽  
Author(s):  
L. I. Arabadzhy-Tipenko ◽  
A. N. Solonenko ◽  
A. G. Bren
Keyword(s):  
Salt Marshes ◽  
Natural Park
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