Abundance and habitat-suitability relationship deteriorate in fragmented forest landscapes: a case of Adinandra griffithii Dyer, a threatened endemic tree from Meghalaya in northeast India

Ecological Processes

Table 3 Species abundance, habitat attributes, and habitat suitability in the occurrence localities

Occurrence localities	Predicted suitability	Suitability classes	Abundance (No. of individuals)				Habitat attributes
Occurrence localities	Predicted suitability	Suitability classes	Adults	Sapling	Seedling	Total	Elevation (m)	Slope	Aspect	Forest type	Canopy cover
Khlaw Jingkieng	0.99	Very high	2	18	10	30	1420	Very steep	NE	Subtropical Broadleaf	Open
Lum Shynna	0.98	Very high	16	22	26	64	1434	Very steep	W	Subtropical Broadleaf	Closed
Law Adong Kynshuilid	0.87	Very high	10	2	0	12	1210	Extreme	W	Subtropical Broadleaf	Open
Law Adong Thmai	0.85	Very high	2	2	0	4	1605	Very steep	N	Subtropical Broadleaf	Mixed
Tyllong Um-Kyrwiang	0.79	High	5	11	18	34	1407	Moderate	S	Subtropical Broadleaf	Closed
Law Arliang Laitryngew	0.77	High	1	5	12	18	1610	Steep	N	Subtropical Broadleaf	Closed
Law Adong Diengkynthong	0.73	High	9	0	0	9	1610	Steep	S	Subtropical Broadleaf	Open
Law Khlieng	0.72	High	8	22	21	51	1410	Very steep	SE	Subtropical Broadleaf	Closed
Law Pjah	0.71	High	2	0	1	3	1605	Very steep	S	Subtropical Broadleaf	Mixed
Balpakram National Park	0.68	High	5	15	23	43	586	Very steep	S	Tropical Broadleaf	Closed
Law Sunnia	0.67	High	4	27	35	66	1210	Very steep	E	Subtropical Broadleaf	Mixed
Mawsynram village forest	0.66	High	5	21	9	35	1430	Extreme	NW	Subtropical Broadleaf	Closed
Law Lyngdoh Lynshing	0.58	Medium	4	11	18	33	1230	Very steep	E	Subtropical Broadleaf	Mixed
Law Adong Phlangmawsyrpat	0.55	Medium	10	11	9	30	1240	Extreme	NE	Subtropical Broadleaf	Closed
Twah Sangparat	0.33	Low	2	2	0	4	1425	Steep	S	Subtropical Broadleaf	Open
Law Adong Phud Juad	0.33	Low	2	4	6	12	1400	Gentle	SE	Subtropical Broadleaf	Closed
Umlangmar Law Shnong	0.27	Low	7	18	13	38	1600	Steep	SW	Subtropical Broadleaf	Open
Total			94	191	201	486

Slope (°): Level (0), nearly level (0.3–1.1), very gentle (1.1–3), gentle (3–5), moderate (5–8.5), strong (8.5–16.5), very strong (16.5–24), extreme (24–35), steep (35–45), very steep (> 45). The ‘predicted suitability’ values for the occurrence localities have been extracted from the logistic output of Maxent. The occurrence localities have been grouped under various suitability classes based on the range of predicted suitability values as very high (0.8–1.0), high (0.6–0.8), medium (0.4–0.6), low (0.2–0.4), and very low (< 0.2)