Pilot longitudinal mosquito surveillance study in the Danube Delta Biosphere Reserve and the first reports of Anopheles algeriensis Theobald, 1903 and Aedes hungaricus Mihályi, 1955 for Romania

Table 3 Estimated taxa richness according the abundance-based coverage estimator (ACE) and Chao1 for the four study sites in the Danube Delta Biosphere Reserve (Romania) during the sampling period in 2014

	Dunărea Veche	Lacul Roșuleț	Letea	Sulina
Observed number of taxa	8.000	9.000	12.000	12.000
Chao1	8.000	9.000	12.000	15.000
Chao1 standard error	0.000	0.000	0.000	4.517
ACE	8.000	NaN^a	13.380	NaN^a
ACE standard error	0.935	NaN^a	1.708	NaN^a

^aCalculation of the ACE not possible, because all rare species (<10 specimens) contained only a single specimen

ISSN: 1756-3305