Appendixes

Appendix 1. Geographic coordinates for white sturgeon early life stage collection sites.

[Map datum is WGS 84, UTM Zone 10N. Capture: for embryo sites: date/time an artificial substrate was retrieved; for free embryos and larvae: date/time collection gear was checked and the presence of white sturgeon noted]

Site	Latitude	Longitude	Life stage	No. collected	Capture
Site	Latitude	Longitude	Life stage	No. collected	Date	Time
1	45.62258271	-121.9892485	Embryo	31	06-07-2005	09:55
2	45.62289954	-121.9889513	Embryo	5	06-07-2005	10:20
3	45.61771374	-121.0038865	Embryo	2	06-07-2005	11:35
6	45.62254046	-121.9891958	Embryo	1	06-08-2005	11:25
7	45.62241121	-121.9888307	Embryo	23	06-08-2005	11:00
8	45.62297238	-121.9890932	Embryo	1	06-08-2005	12:29
15	45.62257919	-121.9881090	Embryo	131	06-10-2005	09:20
16	45.62292762	-121.9880778	Embryo	8	06-10-2005	10:09
17	45.62313231	-121.9881475	Embryo	13	06-10-2005	10:23
18	45.62350572	-121.9881395	Embryo	2	06-10-2005	10:26
19	45.62229428	-121.9896724	Embryo	30	06-10-2005	10:50
21	45.62228238	-121.9908966	Embryo	1	06-10-2005	11:09
22	45.62495504	-121.9863766	Free embryo	4	06-08-2005	14:25
31	45.62489829	-121.9864324	Free embryo	1	06-09-2005	13:07
32	45.62493341	-121.9865616	Free embryo	1	06-09-2005	13:07
33	45.62611006	-121.9854349	Embryo	1	06-15-2005	09:30
34	45.62628692	-121.9849599	Embryo	1	06-15-2005	09:51
38	45.62157528	-121.9993039	Embryo	1	06-15-2005	11:23
47	45.62309953	-121.9894973	Larva	1	06-14-2005	13:25
76	45.61899584	-121.9999048	Embryo	2	06-17-2005	09:46
77	45.61831858	-122.0021020	Embryo	1	06-17-2005	10:24

Appendix 2. Substrate data and frequency graph by site.

[Site: 17. Date: 08-16-2005.
Type of site: Embryo.
Location description: Ives Island, upper main channel, water’s edge.
Substrate description: Cobble, gravel, boulder, periphyton covered.
Vegetation description: Absent.
GPS: Lat/Long. UTM Zone 10N. WGS 84.
Waypoint: 45.62313231 -121.9881475]

Class name	Size class (millimeter)	No. of particles	Percent frequency	Cumulative percent finer
Fines	<2.0	0	0.00	0.00
Very fine gravel	<2.8	0	.00	.00
Very fine gravel	<4.0	0	.00	.00
Fine gravel	<5.6	0	.00	.00
Fine gravel	<8.0	0	.00	.00
Medium gravel	<11.3	1	.73	.73
Medium gravel	<16.0	6	4.38	5.11
Coarse gravel	<22.6	7	5.11	10.22
Coarse gravel	<32.0	13	9.49	19.71
Very coarse gravel	<45.3	17	12.41	32.12
Very coarse gravel	<64.0	15	10.95	43.07
Small cobble	<90.5	14	10.22	53.28
Small cobble	<128	26	18.98	72.26
Large cobble	<181	20	14.60	86.86
Large cobble	<256	13	9.49	96.35
Boulder	≥256	5	3.65	100.00
Total		137	100.00

Appendix 2. Substrate data and frequency graph by site.—Continued

[Site: 18. Date: 08-16-2005.
Type of site: Embryo.
Location description: Upper Ives Island, main channel side.
Substrate description: Cobble, gravel, some boulders, dry periphyton near pool of standing water.
Vegetation description: Absent.
GPS: Lat/Long, UTM Zone 10N, WGS 84.
Waypoint: 45.62350572 -121.9881395]

Class name	Size class (millimeter)	No. of particles	Percent frequency	Cumulative percent finer
Fines	<2.0	0	0.00	0.00
Very fine gravel	<2.8	0	.00	.00
Very fine gravel	<4.0	0	.00	.00
Fine gravel	<5.6	1	.78	.78
Fine gravel	<8.0	1	.78	1.56
Medium gravel	<11.3	4	3.13	4.69
Medium gravel	<16.0	5	3.91	8.59
Coarse gravel	<22.6	4	3.13	11.72
Coarse gravel	<32.0	7	5.47	17.19
Very coarse gravel	<45.3	12	9.38	26.56
Very coarse gravel	<64.0	12	9.38	35.94
Small cobble	<90.5	19	14.84	50.78
Small cobble	<128	29	22.66	73.44
Large cobble	<181	27	21.09	94.53
Large cobble	<256	7	5.47	100.00
Boulder	≥256	0	.00	100.00
Total		128	100.00

Appendix 2. Substrate data and frequency graph by site.—Continued

[Site: 21.
Date: 08-16-2005.
Type of site: Embryo.
Location description: Ives Island middle, main channel side, 0.6–0.9 meters of water.
Substrate description: Cobble, gravel, some boulder, periphyton covered.
Vegetation sescription: Absent.
GPS: Lat/Long, UTM Zone 10N, WGS 84.
Waypoint: 45.62228238 -121.9908966]

Class name	Size class (millimeter)	No. of particles	Percent frequency	Cumulative percent finer
Fines	<2.0	0	0.00	0.00
Very fine gravel	<2.8	0	.00	.00
Very fine gravel	<4.0	0	.00	.00
Fine gravel	<5.6	0	.00	.00
Fine gravel	<8.0	1	.78	.78
Medium gravel	<11.3	1	.78	1.56
Medium gravel	<16.0	11	8.59	10.16
Coarse gravel	<22.6	12	9.38	19.53
Coarse gravel	<32.0	13	10.16	29.69
Very coarse gravel	<45.3	11	8.59	38.28
Very coarse gravel	<64.0	17	13.28	51.56
Small cobble	<90.5	15	11.72	63.28
Small cobble	<128	22	17.19	80.47
Large cobble	<181	23	17.97	98.44
Large cobble	<256	2	1.56	100.00
Boulder	≥256	0	.00	100.00
Total		128	100.00

Appendix 2. Substrate data and frequency graph by site.—Continued

[Site: 22.
Date: 08-12-2005. Type of site: Free embryo.
Location description: Upper Ives Island, main channel side, dry land site in August.
Substrate description: Cobble, gravel, dry periphyton covered.
Vegetation description: Sparse, edge of willows. GPS: Lat/Long, UTM Zone 10N, WGS 84.
Waypoint: 45.62495504 -121.9863766]

Class name	Size class (millimeter)	No. of particles	Percent frequency	Cumulative percent finer
Fines	<2.0	0	0.00	0.00
Very fine gravel	<2.8	0	.00	.00
Very fine gravel	<4.0	0	.00	.00
Fine gravel	<5.6	0	.00	.00
Fine gravel	<8.0	0	.00	.00
Medium gravel	<11.3	4	2.96	2.96
Medium gravel	<16.0	11	8.15	11.11
Coarse gravel	<22.6	9	6.67	17.78
Coarse gravel	<32.0	11	8.15	25.93
Very coarse gravel	<45.3	18	13.33	39.26
Very coarse gravel	<64.0	14	10.37	49.63
Small cobble	<90.5	20	14.81	64.44
Small cobble	<128	25	18.52	82.96
Large cobble	<181	23	17.04	100.00
Large cobble	<256	0	.00	100.00
Boulder	≥256	0	.00	100.00
Total		135	100.00

Appendix 2. Substrate data and frequency graph by site.—Continued

[Site: 31.
Date: 08-12-2005. Type of site: Free embryo.
Location description: Upper Ives Island, main channel side, dry land site in August.
Substrate description: Cobble, gravel, dry periphyton covered.
Vegetation description: Moderate coverage, willows.
GPS: Lat/Long, UTM Zone 10N, WGS 84.
Waypoint: 45.62489829 -121.9864324]

Class name	Size class (millimeter)	No. of particles	Percent frequency	Cumulative percent finer
Fines	<2.0	0	0.00	0.00
Very fine gravel	<2.8	0	.00	.00
Very fine gravel	<4.0	0	.00	.00
Fine gravel	<5.6	0	.00	.00
Fine gravel	<8.0	1	.78	.78
Medium gravel	<11.3	4	3.13	3.91
Medium gravel	<16.0	10	7.81	11.72
Coarse gravel	<22.6	8	6.25	17.97
Coarse gravel	<32.0	19	14.84	32.81
Very coarse gravel	<45.3	12	9.38	42.19
Very coarse gravel	<64.0	25	19.53	61.72
Small cobble	<90.5	19	14.84	76.56
Small cobble	<128	21	16.41	92.97
Large cobble	<181	8	6.25	99.22
Large cobble	<256	1	.78	100.00
Boulder	≥256	0	.00	100.00
Total		128	100.00

Appendix 2. Substrate data and frequency graph by site.—Continued

[Site: 32.
Date: 08-12-2005.
Type of site: Free embryo.
Location description: Upper Ives Island, main channel side, dry land site in August.
Substrate description: Cobble, gravel, dry periphyton covered.
Vegetation description: Heavy coverage, willows.
GPS: Lat/Long, UTM Zone 10N, WGS 84.
Waypoint: 45.62493341 -121.9865616]

Class name	Size class (millimeter)	No. of particles	Percent frequency	Cumulative percent finer
Fines	<2.0	4	3.13	3.13
Very fine gravel	<2.8	1	.78	3.91
Very fine gravel	<4.0	0	.00	3.91
Fine gravel	<5.6	0	.00	3.91
Fine gravel	<8.0	2	1.56	5.47
Medium gravel	<11.3	6	4.69	10.16
Medium gravel	<16.0	9	7.03	17.19
Coarse gravel	<22.6	9	7.03	24.22
Coarse gravel	<32.0	11	8.59	32.81
Very coarse gravel	<45.3	13	10.16	42.97
Very coarse gravel	<64.0	21	16.41	59.38
Small cobble	<90.5	20	15.63	75.00
Small cobble	<128	20	15.63	90.63
Large cobble	<181	10	7.81	98.44
Large cobble	<256	2	1.56	100.00
Boulder	≥256	0	.00	100.00
Total		128	100.00

Appendix 2. Substrate data and frequency graph by site.—Continued

[Site: 33.
Date: 08-12-2005.
Type of site: Embryo.
Location description: Upper Ives Island, shallow water at eastern tip island, start of side channel.
Substrate description: Cobble, gravel, periphyton covered.
Vegetation description: Absent.
GPS: Lat/Long, UTM Zone 10N, WGS 84.
Waypoint: 45.62611006 -121.9854349]

Class name	Size class (millimeter)	No. of particles	Percent frequency	Cumulative percent finer
Fines	<2.0	0	0.00	0.00
Very fine gravel	<2.8	1	.77	.77
Very fine gravel	<4.0	0	.00	.77
Fine gravel	<5.6	1	.77	1.54
Fine gravel	<8.0	6	4.62	6.15
Medium gravel	<11.3	3	2.31	8.46
Medium gravel	<16.0	8	6.15	14.62
Coarse gravel	<22.6	11	8.46	23.08
Coarse gravel	<32.0	12	9.23	32.31
Very coarse gravel	<45.3	16	12.31	44.62
Very coarse gravel	<64.0	20	15.38	60.00
Small cobble	<90.5	14	10.77	70.77
Small cobble	<128	28	21.54	92.31
Large cobble	<181	10	7.69	100.00
Large cobble	<256	0	.00	100.00
Boulder	≥256	0	.00	100.00
Total		130	100.00

Appendix 2. Substrate data and frequency graph by site.—Continued

[Site: 34.
Date: 08-16-2005.
Type of site: Embryo.
Location description: Upper Ives Island, shallow water at eastern tip island, start of side channel.
Substrate description: Cobble, gravel, periphyton covered.
Vegetation description: Absent.
GPS: Lat/Long, UTM Zone 10N, WGS 84.
Waypoint: 45.62628692 -121.9849599]

Class name	Size class (millimeter)	No. of particles	Percent frequency	Cumulative percent finer
Fines	<2.0	0	0.00	0.00
Very fine gravel	<2.8	0	.00	.00
Very fine gravel	<4.0	1	.77	.77
Fine gravel	<5.6	5	3.85	4.62
Fine gravel	<8.0	7	5.38	10.00
Medium gravel	<11.3	5	3.85	13.85
Medium gravel	<16.0	10	7.69	21.54
Coarse gravel	<22.6	7	5.38	26.92
Coarse gravel	<32.0	18	13.85	40.77
Very coarse gravel	<45.3	19	14.62	55.38
Very coarse gravel	<64.0	24	18.46	73.85
Small cobble	<90.5	21	16.15	90.00
Small cobble	<128	9	6.92	96.92
Large cobble	<181	4	3.08	100.00
Large cobble	<256	0	.00	100.00
Boulder	≥256	0	.00	100.00
Total		130	100.00

Appendix 2. Substrate data and frequency graph by site.—Continued

[Site: 47.
Date: 08-16-2005.
Type of site: Larva.
Location description: Ives Island, middle, main channel side.
Substrate description: Cobble, gravel, dry periphyton covered.
Vegetation description: Sparse.
GPS: Lat/Long, UTM Zone 10N, WGS 84.
Waypoint: 45.62309953 -121.9894973]

Class name	Size class (millimeter)	No. of particles	Percent frequency	Cumulative percent finer
Fines	<2.0	0	0.00	0.00
Very fine gravel	<2.8	0	.00	.00
Very fine gravel	<4.0	0	.00	.00
Fine gravel	<5.6	2	1.56	1.56
Fine gravel	<8.0	1	.78	2.34
Medium gravel	<11.3	2	1.56	3.91
Medium gravel	<16.0	7	5.47	9.38
Coarse gravel	<22.6	6	4.69	14.06
Coarse gravel	<32.0	11	8.59	22.66
Very coarse gravel	<45.3	12	9.38	32.03
Very coarse gravel	<64.0	23	17.97	50.00
Small cobble	<90.5	26	20.31	70.31
Small cobble	<128	26	20.31	90.63
Large cobble	<181	12	9.38	100.00
Large cobble	<256	0	.00	100.00
Boulder	≥256	0	.00	100.00
Total		128	100.00

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