Use of species richness estimators improves evaluation of understory plant response to logging: a study of redwood forests

Plant Ecology ◽  
2007 ◽  
Vol 194 (2) ◽  
pp. 179-194 ◽  
Author(s):  
David T. Loya ◽  
Erik S. Jules
Keyword(s):  
Species Richness ◽  
Plant Response ◽  
Redwood Forests ◽  
Understory Plant ◽  
Richness Estimators

Catalogue of aquatic Oligochaeta (Annelida: Clitellata) of Montenegro, exclusive of Naidinae and Pristininae

Zootaxa ◽  
2011 ◽  
Vol 2985 (1) ◽  
pp. 1
Author(s):  
DANIJELA ŠUNDIĆ ◽  
BRANKO M. RADUJKOVIĆ ◽  
JASMINA KRPO–ĆETKOVIĆ
Keyword(s):  
Species Richness ◽  
Black Sea ◽  
Adriatic Sea ◽  
First Record ◽  
Aquatic Oligochaeta ◽  
The Black Sea ◽  
Drainage Basins ◽  
Aquatic Oligochaete ◽  
Balkan Region ◽  
Richness Estimators

The aquatic oligochaete fauna of Montenegro was recently studied in order to improve the knowledge of this group in the Balkan region. This study was carried out on sediments collected from 70 sampling sites (the Black Sea and the Adriatic Sea drainage basins) during three years (2005–2008). Forty-one species were identified, from seven following families: Naididae, Enchytraeidae, Haplotaxidae, Lumbriculidae, Lumbricidae, Criodrilidae and Branchiobdellidae (exclusive of Naidinae and Pristininae). Sixteen of them represent first record for the Montenegrin oligochaete fauna: Embolocephalus velutinus, Ilyodrilus templetoni, Psammoryctides deserticola, Spirosperma ferox, Tubifex ignotus, Bathydrilus adriaticus, Bothrioneurum vejdovskyanum, Rhyacodrilus coccineus, Cernosvitoviella atrata, Enchytraeus buchholzi, Mesenchytraeus armatus, Haplotaxis gordioides, Rhynchelmis limosella, Stylodrilus heringianus, Tatriella slovenica and Trichodrilus strandi. The list of species from the subfamilies Naidinae and Pristininae was published previously (Šundić et al. 2011), and it comprises 36 species. Altogether, the present study and literature data show that Montenegrin aquatic oligochaete fauna consists of 77 species. Concerning similarity, values of Jaccard’s index are the highest between Montenegrin and Serbian oligochaete fauna (57 %), and the lowest between Montenegrin and Albanian oligochaete fauna (27.77 %). Species richness estimators (Mao Tau, Uniques Mean, Chao 1, Chao 2, Jack 1, Jack 2, Bootstrap, ACE and ICE) indicate that findings of new oligochaete species in Montenegro are expected.

scholarly journals Understory Plant Response to Site Preparation and Fertilization of Loblolly and Shortleaf Pine Forests

1998 ◽  
Vol 51 (1) ◽  
pp. 47 ◽  
Author(s):  
Dale G. Brockway ◽  
Gale L. Wolters ◽  
Henry A. Pearson ◽  
Ronald E. Thill ◽  
V. Clark Baldwin ◽  
...  
Keyword(s):  
Site Preparation ◽  
Plant Response ◽  
Pine Forests ◽  
Shortleaf Pine ◽  
Understory Plant

Macrofungal diversity of a temperate oak forest: a test of species richness estimators

1999 ◽  
Vol 77 (7) ◽  
pp. 1014-1027 ◽  
Author(s):  
John Paul Schmit ◽  
John F. Murphy ◽  
Gregory M. Mueller
Keyword(s):  
Species Richness ◽  
Oak Forest ◽  
Richness Estimators

Application of species-richness estimators for the assessment of earthworm diversity

2013 ◽  
Vol 49 (5-8) ◽  
pp. 273-283 ◽  
Author(s):  
Tanja Milutinović ◽  
Jovana Milanović ◽  
Mirjana Stojanović
Keyword(s):  
Species Richness ◽  
Richness Estimators

Wildland fire effects on understory plant communities in two fire-prone forests

2008 ◽  
Vol 38 (1) ◽  
pp. 133-142 ◽  
Author(s):  
Daniel C. Laughlin ◽  
Peter Z. Fulé
Keyword(s):  
Species Richness ◽  
Ponderosa Pine ◽  
Wildland Fire ◽  
Plant Cover ◽  
Plant Species Richness ◽  
Fire Effects ◽  
Surface Fire ◽  
Total Species Richness ◽  
Understory Plant ◽  
Understory Plant Communities

Our understanding of wildland fire effects on understory plant communities is limited because of a lack of repeated measurements before and after lightning-ignited fires. We examined vegetation responses to a surface fire in a ponderosa pine forest and a mixed-severity fire in a spruce–fir–aspen forest using before–after, control–impact (BACI) study designs. We hypothesized that the surface fire would stimulate plant species richness and minimally alter community composition, but that the mixed-severity fire would decrease richness and significantly alter composition. In ponderosa pine forests, total species richness and plant cover increased slightly because of annual and biennial forb and grass establishment in soils where duff layers were reduced by the surface fire. In spruce–fir–aspen forests, total species richness and plant cover were similar in burned and unburned forests after 2 years, although annual and biennial forbs and graminoids increased significantly in the burned area. Plant community composition was altered by both fires. Wildfires may indirectly influence the understory plant community through the mediating effects of overstory basal area and litter depth. Fire effects on plant species richness and cover were weaker than effects due to environmental factors. Managers should anticipate increases in both native and non-native ruderal species following landscape-scale fires.

scholarly journals A structured inventory of spiders (Arachnida, Araneae) in natural and artificial forest gaps at Porto Urucu, Western Brazilian Amazonia

2010 ◽  
Vol 40 (2) ◽  
pp. 357-372 ◽  
Author(s):  
Alexandre B. Bonaldo ◽  
Sidclay C. Dias
Keyword(s):  
Species Richness ◽  
Performance Test ◽  
Gas Production ◽  
Pitfall Traps ◽  
Preliminary Survey ◽  
Community Similarity ◽  
Herbaceous Vegetation ◽  
Richness Estimators ◽  
Best Fit ◽  
Shelter Availability

A preliminary survey of the spider fauna in natural and artificial forest gap formations at “Porto Urucu”, a petroleum/natural gas production facility in the Urucu river basin, Coari, Amazonas, Brazil is presented. Sampling was conducted both occasionally and using a protocol composed of a suite of techniques: beating trays (32 samples), nocturnal manual samplings (48), sweeping nets (16), Winkler extractors (24), and pitfall traps (120). A total of 4201 spiders, belonging to 43 families and 393 morphospecies, were collected during the dry season, in July, 2003. Excluding the occasional samples, the observed richness was 357 species. In a performance test of seven species richness estimators, the Incidence Based Coverage Estimator (ICE) was the best fit estimator, with 639 estimated species. To evaluate differences in species richness associated with natural and artificial gaps, samples from between the center of the gaps up to 300 meters inside the adjacent forest matrix were compared through the inspection of the confidence intervals of individual-based rarefaction curves for each treatment. The observed species richness was significantly higher in natural gaps combined with adjacent forest than in the artificial gaps combined with adjacent forest. Moreover, a community similarity analysis between the fauna collected under both treatments demonstrated that there were considerable differences in species composition. The significantly higher abundance of Lycosidae in artificial gap forest is explained by the presence of herbaceous vegetation in the gaps themselves. Ctenidae was significantly more abundant in the natural gap forest, probable due to the increase of shelter availability provided by the fallen trees in the gaps themselves. Both families are identified as potential indicators of environmental change related to the establishment or recovery of artificial gaps in the study area.

scholarly journals Birds of the Parque Ecológico Lagoa da Fazenda, Sobral, Ceará state, northeastern Brazil

Check List ◽  
2017 ◽  
Vol 13 (1) ◽  
pp. 2037
Author(s):  
Ana Carolina Brasileiro ◽  
Frede Lima-Araujo ◽  
Jamile Aragão Alcântara ◽  
Alano Sousa Martins Pontes ◽  
José André Neto ◽  
...  
Keyword(s):  
Species Richness ◽  
Urban Expansion ◽  
Bird Species ◽  
Northeastern Brazil ◽  
Urban Park ◽  
Native Vegetation ◽  
Natural Areas ◽  
Local Species Richness ◽  
Local Species ◽  
Richness Estimators

Natural areas within cities are important as they contribute to maintain biodiversity and the functioning of ecosystems. In Ceará state, inventories of birds in human-impacted areas are still scarce. Here, we inventory bird species and estimate the species richness at Parque Ecológico Lagoa da Fazenda, an urban park in the municipality of Sobral, in northeastern Brazil. We found 82 bird species, of which 16 breed in the area, three are endemics, and three others are introduced. Despite the moderate species richness detected, richness estimators revealed that sampling was sufficient to detect most species. To maintain or even increase local species richness, we suggest the cessation of urban expansion within the park, sewage dumping, and filling of the wetland, as well as further planting of native vegetation.

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